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Finding the Fourth Proportional to 85,113.88, 127,650.32 and 37,702.78

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Solution

The fourth proportional to 85,113.88, 127,650.32 and 37,702.78 is: 56,545.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,113.88 : 127,650.32 = 37,702.78 : x
  2. Step 2: Convert to fraction form
    85,113.88/127,650.32 = 37,702.78/x
  3. Step 3: Cross multiply
    85,113.88x = 127,650.32 × 37,702.78
  4. Step 4: Simplify right side
    85,113.88x = 4,812,771,931.89
  5. Step 5: Solve for x
    x = 4,812,771,931.89/85,113.88
  6. Step 6: Final answer
    x = 56,545.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.