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Finding the Fourth Proportional to 72,149.51, 108,224.27 and 19,557.63

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Solution

The fourth proportional to 72,149.51, 108,224.27 and 19,557.63 is: 29,336.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,149.51 : 108,224.27 = 19,557.63 : x
  2. Step 2: Convert to fraction form
    72,149.51/108,224.27 = 19,557.63/x
  3. Step 3: Cross multiply
    72,149.51x = 108,224.27 × 19,557.63
  4. Step 4: Simplify right side
    72,149.51x = 2,116,610,131.89
  5. Step 5: Solve for x
    x = 2,116,610,131.89/72,149.51
  6. Step 6: Final answer
    x = 29,336.44

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Half scale
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Double scale
Find fourth proportional to 72,150.51, 108,225.76 and 19,558.63
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.