Home / 81,350.64-112,154.56-57,119.13

Finding the Fourth Proportional to 81,350.64, 112,154.56 and 57,119.13

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Solution

The fourth proportional to 81,350.64, 112,154.56 and 57,119.13 is: 78,747.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,350.64 : 112,154.56 = 57,119.13 : x
  2. Step 2: Convert to fraction form
    81,350.64/112,154.56 = 57,119.13/x
  3. Step 3: Cross multiply
    81,350.64x = 112,154.56 × 57,119.13
  4. Step 4: Simplify right side
    81,350.64x = 6,406,170,892.73
  5. Step 5: Solve for x
    x = 6,406,170,892.73/81,350.64
  6. Step 6: Final answer
    x = 78,747.64

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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.