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Finding the Fourth Proportional to 77,155.64, 114,890.30 and 74,318.02

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Solution

The fourth proportional to 77,155.64, 114,890.30 and 74,318.02 is: 110,664.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,155.64 : 114,890.30 = 74,318.02 : x
  2. Step 2: Convert to fraction form
    77,155.64/114,890.30 = 74,318.02/x
  3. Step 3: Cross multiply
    77,155.64x = 114,890.30 × 74,318.02
  4. Step 4: Simplify right side
    77,155.64x = 8,538,419,613.21
  5. Step 5: Solve for x
    x = 8,538,419,613.21/77,155.64
  6. Step 6: Final answer
    x = 110,664.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.