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Finding the Fourth Proportional to 64,701.52, 89,287.82 and 36,407.68

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Solution

The fourth proportional to 64,701.52, 89,287.82 and 36,407.68 is: 50,242.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,701.52 : 89,287.82 = 36,407.68 : x
  2. Step 2: Convert to fraction form
    64,701.52/89,287.82 = 36,407.68/x
  3. Step 3: Cross multiply
    64,701.52x = 89,287.82 × 36,407.68
  4. Step 4: Simplify right side
    64,701.52x = 3,250,762,378.46
  5. Step 5: Solve for x
    x = 3,250,762,378.46/64,701.52
  6. Step 6: Final answer
    x = 50,242.44

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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.