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Finding the Fourth Proportional to 74,367.71, 111,432.63 and 66,814.35

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Solution

The fourth proportional to 74,367.71, 111,432.63 and 66,814.35 is: 100,114.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,367.71 : 111,432.63 = 66,814.35 : x
  2. Step 2: Convert to fraction form
    74,367.71/111,432.63 = 66,814.35/x
  3. Step 3: Cross multiply
    74,367.71x = 111,432.63 × 66,814.35
  4. Step 4: Simplify right side
    74,367.71x = 7,445,298,742.24
  5. Step 5: Solve for x
    x = 7,445,298,742.24/74,367.71
  6. Step 6: Final answer
    x = 100,114.68

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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.