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Finding the Fourth Proportional to 79,281.59, 118,689.11 and 52,920.95

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Solution

The fourth proportional to 79,281.59, 118,689.11 and 52,920.95 is: 79,225.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,281.59 : 118,689.11 = 52,920.95 : x
  2. Step 2: Convert to fraction form
    79,281.59/118,689.11 = 52,920.95/x
  3. Step 3: Cross multiply
    79,281.59x = 118,689.11 × 52,920.95
  4. Step 4: Simplify right side
    79,281.59x = 6,281,140,191.25
  5. Step 5: Solve for x
    x = 6,281,140,191.25/79,281.59
  6. Step 6: Final answer
    x = 79,225.71

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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.