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Finding the Fourth Proportional to 69,519.60, 103,956.84 and 66,017.52

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Solution

The fourth proportional to 69,519.60, 103,956.84 and 66,017.52 is: 98,719.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,519.60 : 103,956.84 = 66,017.52 : x
  2. Step 2: Convert to fraction form
    69,519.60/103,956.84 = 66,017.52/x
  3. Step 3: Cross multiply
    69,519.60x = 103,956.84 × 66,017.52
  4. Step 4: Simplify right side
    69,519.60x = 6,862,972,763.84
  5. Step 5: Solve for x
    x = 6,862,972,763.84/69,519.60
  6. Step 6: Final answer
    x = 98,719.97

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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.