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Finding the Fourth Proportional to 66,427.83, 99,557.51 and 65,724.75

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Solution

The fourth proportional to 66,427.83, 99,557.51 and 65,724.75 is: 98,503.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,427.83 : 99,557.51 = 65,724.75 : x
  2. Step 2: Convert to fraction form
    66,427.83/99,557.51 = 65,724.75/x
  3. Step 3: Cross multiply
    66,427.83x = 99,557.51 × 65,724.75
  4. Step 4: Simplify right side
    66,427.83x = 6,543,392,126.75
  5. Step 5: Solve for x
    x = 6,543,392,126.75/66,427.83
  6. Step 6: Final answer
    x = 98,503.78

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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.