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Finding the Fourth Proportional to 61,976, 85,752.06 and 54,034.76

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Solution

The fourth proportional to 61,976, 85,752.06 and 54,034.76 is: 74,764.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,976 : 85,752.06 = 54,034.76 : x
  2. Step 2: Convert to fraction form
    61,976/85,752.06 = 54,034.76/x
  3. Step 3: Cross multiply
    61,976x = 85,752.06 × 54,034.76
  4. Step 4: Simplify right side
    61,976x = 4,633,591,981.61
  5. Step 5: Solve for x
    x = 4,633,591,981.61/61,976
  6. Step 6: Final answer
    x = 74,764.30

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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.