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Finding the Fourth Proportional to 72,087.48, 108,130.86 and 19,496.76

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Solution

The fourth proportional to 72,087.48, 108,130.86 and 19,496.76 is: 29,245.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,087.48 : 108,130.86 = 19,496.76 : x
  2. Step 2: Convert to fraction form
    72,087.48/108,130.86 = 19,496.76/x
  3. Step 3: Cross multiply
    72,087.48x = 108,130.86 × 19,496.76
  4. Step 4: Simplify right side
    72,087.48x = 2,108,201,426.01
  5. Step 5: Solve for x
    x = 2,108,201,426.01/72,087.48
  6. Step 6: Final answer
    x = 29,245.04

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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.