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Finding the Fourth Proportional to 72,076.15, 108,113.97 and 19,485.63

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Solution

The fourth proportional to 72,076.15, 108,113.97 and 19,485.63 is: 29,228.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,076.15 : 108,113.97 = 19,485.63 : x
  2. Step 2: Convert to fraction form
    72,076.15/108,113.97 = 19,485.63/x
  3. Step 3: Cross multiply
    72,076.15x = 108,113.97 × 19,485.63
  4. Step 4: Simplify right side
    72,076.15x = 2,106,668,817.25
  5. Step 5: Solve for x
    x = 2,106,668,817.25/72,076.15
  6. Step 6: Final answer
    x = 29,228.38

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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.