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Finding the Fourth Proportional to 79,713,211.80, 119,569,817.70 and 52,503,432.60

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Solution

The fourth proportional to 79,713,211.80, 119,569,817.70 and 52,503,432.60 is: 78,755,148.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,713,211.80 : 119,569,817.70 = 52,503,432.60 : x
  2. Step 2: Convert to fraction form
    79,713,211.80/119,569,817.70 = 52,503,432.60/x
  3. Step 3: Cross multiply
    79,713,211.80x = 119,569,817.70 × 52,503,432.60
  4. Step 4: Simplify right side
    79,713,211.80x = 6,277,825,864,606,237
  5. Step 5: Solve for x
    x = 6,277,825,864,606,237/79,713,211.80
  6. Step 6: Final answer
    x = 78,755,148.90

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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.