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Finding the Fourth Proportional to 57,801.60, 86,702.40 and 35,542.80

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Solution

The fourth proportional to 57,801.60, 86,702.40 and 35,542.80 is: 53,314.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,801.60 : 86,702.40 = 35,542.80 : x
  2. Step 2: Convert to fraction form
    57,801.60/86,702.40 = 35,542.80/x
  3. Step 3: Cross multiply
    57,801.60x = 86,702.40 × 35,542.80
  4. Step 4: Simplify right side
    57,801.60x = 3,081,646,062.72
  5. Step 5: Solve for x
    x = 3,081,646,062.72/57,801.60
  6. Step 6: Final answer
    x = 53,314.20

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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.