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Finding the Fourth Proportional to 57,304.80, 85,957.20 and 47,455.20

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Solution

The fourth proportional to 57,304.80, 85,957.20 and 47,455.20 is: 71,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,304.80 : 85,957.20 = 47,455.20 : x
  2. Step 2: Convert to fraction form
    57,304.80/85,957.20 = 47,455.20/x
  3. Step 3: Cross multiply
    57,304.80x = 85,957.20 × 47,455.20
  4. Step 4: Simplify right side
    57,304.80x = 4,079,116,117.44
  5. Step 5: Solve for x
    x = 4,079,116,117.44/57,304.80
  6. Step 6: Final answer
    x = 71,182.80

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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.