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Finding the Fourth Proportional to 66,886.79, 100,242.17 and 37,318.55

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Solution

The fourth proportional to 66,886.79, 100,242.17 and 37,318.55 is: 55,928.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,886.79 : 100,242.17 = 37,318.55 : x
  2. Step 2: Convert to fraction form
    66,886.79/100,242.17 = 37,318.55/x
  3. Step 3: Cross multiply
    66,886.79x = 100,242.17 × 37,318.55
  4. Step 4: Simplify right side
    66,886.79x = 3,740,892,246.66
  5. Step 5: Solve for x
    x = 3,740,892,246.66/66,886.79
  6. Step 6: Final answer
    x = 55,928.72

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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.