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Finding the Fourth Proportional to 74,488.92, 111,756.06 and 21,898.86

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Solution

The fourth proportional to 74,488.92, 111,756.06 and 21,898.86 is: 32,854.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,488.92 : 111,756.06 = 21,898.86 : x
  2. Step 2: Convert to fraction form
    74,488.92/111,756.06 = 21,898.86/x
  3. Step 3: Cross multiply
    74,488.92x = 111,756.06 × 21,898.86
  4. Step 4: Simplify right side
    74,488.92x = 2,447,330,312.09
  5. Step 5: Solve for x
    x = 2,447,330,312.09/74,488.92
  6. Step 6: Final answer
    x = 32,854.96

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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.