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Finding the Fourth Proportional to 87,513.42, 120,932.02 and 71,592.06

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Solution

The fourth proportional to 87,513.42, 120,932.02 and 71,592.06 is: 98,930.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,513.42 : 120,932.02 = 71,592.06 : x
  2. Step 2: Convert to fraction form
    87,513.42/120,932.02 = 71,592.06/x
  3. Step 3: Cross multiply
    87,513.42x = 120,932.02 × 71,592.06
  4. Step 4: Simplify right side
    87,513.42x = 8,657,772,431.76
  5. Step 5: Solve for x
    x = 8,657,772,431.76/87,513.42
  6. Step 6: Final answer
    x = 98,930.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.