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Finding the Fourth Proportional to 63,720.92, 87,931.49 and 35,040.03

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Solution

The fourth proportional to 63,720.92, 87,931.49 and 35,040.03 is: 48,353.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,720.92 : 87,931.49 = 35,040.03 : x
  2. Step 2: Convert to fraction form
    63,720.92/87,931.49 = 35,040.03/x
  3. Step 3: Cross multiply
    63,720.92x = 87,931.49 × 35,040.03
  4. Step 4: Simplify right side
    63,720.92x = 3,081,121,872.34
  5. Step 5: Solve for x
    x = 3,081,121,872.34/63,720.92
  6. Step 6: Final answer
    x = 48,353.38

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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.