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Finding the Fourth Proportional to 63,171.78, 87,174.81 and 34,877.40

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Solution

The fourth proportional to 63,171.78, 87,174.81 and 34,877.40 is: 48,129.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,171.78 : 87,174.81 = 34,877.40 : x
  2. Step 2: Convert to fraction form
    63,171.78/87,174.81 = 34,877.40/x
  3. Step 3: Cross multiply
    63,171.78x = 87,174.81 × 34,877.40
  4. Step 4: Simplify right side
    63,171.78x = 3,040,430,718.29
  5. Step 5: Solve for x
    x = 3,040,430,718.29/63,171.78
  6. Step 6: Final answer
    x = 48,129.57

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1.5x scale

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.