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Finding the Fourth Proportional to 64,608.75, 89,152.11 and 37,731.72

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Solution

The fourth proportional to 64,608.75, 89,152.11 and 37,731.72 is: 52,065.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,608.75 : 89,152.11 = 37,731.72 : x
  2. Step 2: Convert to fraction form
    64,608.75/89,152.11 = 37,731.72/x
  3. Step 3: Cross multiply
    64,608.75x = 89,152.11 × 37,731.72
  4. Step 4: Simplify right side
    64,608.75x = 3,363,862,451.93
  5. Step 5: Solve for x
    x = 3,363,862,451.93/64,608.75
  6. Step 6: Final answer
    x = 52,065.12

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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.