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Finding the Fourth Proportional to 63,086.16, 87,065.01 and 47,142.90

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Solution

The fourth proportional to 63,086.16, 87,065.01 and 47,142.90 is: 65,061.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,086.16 : 87,065.01 = 47,142.90 : x
  2. Step 2: Convert to fraction form
    63,086.16/87,065.01 = 47,142.90/x
  3. Step 3: Cross multiply
    63,086.16x = 87,065.01 × 47,142.90
  4. Step 4: Simplify right side
    63,086.16x = 4,104,497,059.93
  5. Step 5: Solve for x
    x = 4,104,497,059.93/63,086.16
  6. Step 6: Final answer
    x = 65,061.77

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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.