Home / 81,937.28-113,036.88-66,892.08

Finding the Fourth Proportional to 81,937.28, 113,036.88 and 66,892.08

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Solution

The fourth proportional to 81,937.28, 113,036.88 and 66,892.08 is: 92,281.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,937.28 : 113,036.88 = 66,892.08 : x
  2. Step 2: Convert to fraction form
    81,937.28/113,036.88 = 66,892.08/x
  3. Step 3: Cross multiply
    81,937.28x = 113,036.88 × 66,892.08
  4. Step 4: Simplify right side
    81,937.28x = 7,561,272,019.91
  5. Step 5: Solve for x
    x = 7,561,272,019.91/81,937.28
  6. Step 6: Final answer
    x = 92,281.22

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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.