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Finding the Fourth Proportional to 54,384.60, 81,543.60 and 49,743.72

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Solution

The fourth proportional to 54,384.60, 81,543.60 and 49,743.72 is: 74,585.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,384.60 : 81,543.60 = 49,743.72 : x
  2. Step 2: Convert to fraction form
    54,384.60/81,543.60 = 49,743.72/x
  3. Step 3: Cross multiply
    54,384.60x = 81,543.60 × 49,743.72
  4. Step 4: Simplify right side
    54,384.60x = 4,056,282,006.19
  5. Step 5: Solve for x
    x = 4,056,282,006.19/54,384.60
  6. Step 6: Final answer
    x = 74,585.12

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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.