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Finding the Fourth Proportional to 84,839.60, 127,356.60 and 51,597.20

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Solution

The fourth proportional to 84,839.60, 127,356.60 and 51,597.20 is: 77,454.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,839.60 : 127,356.60 = 51,597.20 : x
  2. Step 2: Convert to fraction form
    84,839.60/127,356.60 = 51,597.20/x
  3. Step 3: Cross multiply
    84,839.60x = 127,356.60 × 51,597.20
  4. Step 4: Simplify right side
    84,839.60x = 6,571,243,961.52
  5. Step 5: Solve for x
    x = 6,571,243,961.52/84,839.60
  6. Step 6: Final answer
    x = 77,454.91

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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.