Home / 81,349.28-112,204.14-74,656.52

Finding the Fourth Proportional to 81,349.28, 112,204.14 and 74,656.52

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Solution

The fourth proportional to 81,349.28, 112,204.14 and 74,656.52 is: 102,972.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,349.28 : 112,204.14 = 74,656.52 : x
  2. Step 2: Convert to fraction form
    81,349.28/112,204.14 = 74,656.52/x
  3. Step 3: Cross multiply
    81,349.28x = 112,204.14 × 74,656.52
  4. Step 4: Simplify right side
    81,349.28x = 8,376,770,621.99
  5. Step 5: Solve for x
    x = 8,376,770,621.99/81,349.28
  6. Step 6: Final answer
    x = 102,972.89

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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.