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Finding the Fourth Proportional to 64,957.32, 89,620.70 and 38,100.96

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Solution

The fourth proportional to 64,957.32, 89,620.70 and 38,100.96 is: 52,567.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,957.32 : 89,620.70 = 38,100.96 : x
  2. Step 2: Convert to fraction form
    64,957.32/89,620.70 = 38,100.96/x
  3. Step 3: Cross multiply
    64,957.32x = 89,620.70 × 38,100.96
  4. Step 4: Simplify right side
    64,957.32x = 3,414,634,515.37
  5. Step 5: Solve for x
    x = 3,414,634,515.37/64,957.32
  6. Step 6: Final answer
    x = 52,567.36

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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.