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Finding the Fourth Proportional to 55,756.80, 83,732.40 and 54,007.20

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Solution

The fourth proportional to 55,756.80, 83,732.40 and 54,007.20 is: 81,104.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,756.80 : 83,732.40 = 54,007.20 : x
  2. Step 2: Convert to fraction form
    55,756.80/83,732.40 = 54,007.20/x
  3. Step 3: Cross multiply
    55,756.80x = 83,732.40 × 54,007.20
  4. Step 4: Simplify right side
    55,756.80x = 4,522,152,473.28
  5. Step 5: Solve for x
    x = 4,522,152,473.28/55,756.80
  6. Step 6: Final answer
    x = 81,104.95

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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.