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Finding the Fourth Proportional to 129,277.32, 193,918.32 and 40,528.80

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Solution

The fourth proportional to 129,277.32, 193,918.32 and 40,528.80 is: 60,793.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,277.32 : 193,918.32 = 40,528.80 : x
  2. Step 2: Convert to fraction form
    129,277.32/193,918.32 = 40,528.80/x
  3. Step 3: Cross multiply
    129,277.32x = 193,918.32 × 40,528.80
  4. Step 4: Simplify right side
    129,277.32x = 7,859,276,807.62
  5. Step 5: Solve for x
    x = 7,859,276,807.62/129,277.32
  6. Step 6: Final answer
    x = 60,793.93

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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.