Home / 86,644.13-129,966.21-31,240.13

Finding the Fourth Proportional to 86,644.13, 129,966.21 and 31,240.13

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Solution

The fourth proportional to 86,644.13, 129,966.21 and 31,240.13 is: 46,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,644.13 : 129,966.21 = 31,240.13 : x
  2. Step 2: Convert to fraction form
    86,644.13/129,966.21 = 31,240.13/x
  3. Step 3: Cross multiply
    86,644.13x = 129,966.21 × 31,240.13
  4. Step 4: Simplify right side
    86,644.13x = 4,060,160,646.18
  5. Step 5: Solve for x
    x = 4,060,160,646.18/86,644.13
  6. Step 6: Final answer
    x = 46,860.20

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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.