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Finding the Fourth Proportional to 64,585.70, 89,091.10 and 40,344.52

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Solution

The fourth proportional to 64,585.70, 89,091.10 and 40,344.52 is: 55,652.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,585.70 : 89,091.10 = 40,344.52 : x
  2. Step 2: Convert to fraction form
    64,585.70/89,091.10 = 40,344.52/x
  3. Step 3: Cross multiply
    64,585.70x = 89,091.10 × 40,344.52
  4. Step 4: Simplify right side
    64,585.70x = 3,594,337,493.47
  5. Step 5: Solve for x
    x = 3,594,337,493.47/64,585.70
  6. Step 6: Final answer
    x = 55,652.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.