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Finding the Fourth Proportional to 63,156, 87,154.68 and 34,475.40

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Solution

The fourth proportional to 63,156, 87,154.68 and 34,475.40 is: 47,575.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,156 : 87,154.68 = 34,475.40 : x
  2. Step 2: Convert to fraction form
    63,156/87,154.68 = 34,475.40/x
  3. Step 3: Cross multiply
    63,156x = 87,154.68 × 34,475.40
  4. Step 4: Simplify right side
    63,156x = 3,004,692,454.87
  5. Step 5: Solve for x
    x = 3,004,692,454.87/63,156
  6. Step 6: Final answer
    x = 47,575.72

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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.