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Finding the Fourth Proportional to 85,360.56, 127,830.24 and 63,670.20

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Solution

The fourth proportional to 85,360.56, 127,830.24 and 63,670.20 is: 95,348.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,360.56 : 127,830.24 = 63,670.20 : x
  2. Step 2: Convert to fraction form
    85,360.56/127,830.24 = 63,670.20/x
  3. Step 3: Cross multiply
    85,360.56x = 127,830.24 × 63,670.20
  4. Step 4: Simplify right side
    85,360.56x = 8,138,976,946.85
  5. Step 5: Solve for x
    x = 8,138,976,946.85/85,360.56
  6. Step 6: Final answer
    x = 95,348.21

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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.