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Finding the Fourth Proportional to 73,107.60, 109,585.80 and 39,757.20

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Solution

The fourth proportional to 73,107.60, 109,585.80 and 39,757.20 is: 59,594.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,107.60 : 109,585.80 = 39,757.20 : x
  2. Step 2: Convert to fraction form
    73,107.60/109,585.80 = 39,757.20/x
  3. Step 3: Cross multiply
    73,107.60x = 109,585.80 × 39,757.20
  4. Step 4: Simplify right side
    73,107.60x = 4,356,824,567.76
  5. Step 5: Solve for x
    x = 4,356,824,567.76/73,107.60
  6. Step 6: Final answer
    x = 59,594.69

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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.