Home / 86,437.13-129,655.70-20,773.13

Finding the Fourth Proportional to 86,437.13, 129,655.70 and 20,773.13

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Solution

The fourth proportional to 86,437.13, 129,655.70 and 20,773.13 is: 31,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,437.13 : 129,655.70 = 20,773.13 : x
  2. Step 2: Convert to fraction form
    86,437.13/129,655.70 = 20,773.13/x
  3. Step 3: Cross multiply
    86,437.13x = 129,655.70 × 20,773.13
  4. Step 4: Simplify right side
    86,437.13x = 2,693,354,711.34
  5. Step 5: Solve for x
    x = 2,693,354,711.34/86,437.13
  6. Step 6: Final answer
    x = 31,159.70

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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.