Home / 86,489.40-129,721.14-33,935.16

Finding the Fourth Proportional to 86,489.40, 129,721.14 and 33,935.16

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Solution

The fourth proportional to 86,489.40, 129,721.14 and 33,935.16 is: 50,897.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,489.40 : 129,721.14 = 33,935.16 : x
  2. Step 2: Convert to fraction form
    86,489.40/129,721.14 = 33,935.16/x
  3. Step 3: Cross multiply
    86,489.40x = 129,721.14 × 33,935.16
  4. Step 4: Simplify right side
    86,489.40x = 4,402,107,641.28
  5. Step 5: Solve for x
    x = 4,402,107,641.28/86,489.40
  6. Step 6: Final answer
    x = 50,897.65

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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.