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Finding the Fourth Proportional to 64,358.56, 88,815.28 and 38,866.08

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Solution

The fourth proportional to 64,358.56, 88,815.28 and 38,866.08 is: 53,635.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,358.56 : 88,815.28 = 38,866.08 : x
  2. Step 2: Convert to fraction form
    64,358.56/88,815.28 = 38,866.08/x
  3. Step 3: Cross multiply
    64,358.56x = 88,815.28 × 38,866.08
  4. Step 4: Simplify right side
    64,358.56x = 3,451,901,777.70
  5. Step 5: Solve for x
    x = 3,451,901,777.70/64,358.56
  6. Step 6: Final answer
    x = 53,635.47

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1.5x scale

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.