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Finding the Fourth Proportional to 52,992,200.80, 79,488,301.20 and 18,914,658.40

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Solution

The fourth proportional to 52,992,200.80, 79,488,301.20 and 18,914,658.40 is: 28,371,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,992,200.80 : 79,488,301.20 = 18,914,658.40 : x
  2. Step 2: Convert to fraction form
    52,992,200.80/79,488,301.20 = 18,914,658.40/x
  3. Step 3: Cross multiply
    52,992,200.80x = 79,488,301.20 × 18,914,658.40
  4. Step 4: Simplify right side
    52,992,200.80x = 1,503,494,063,994,310
  5. Step 5: Solve for x
    x = 1,503,494,063,994,310/52,992,200.80
  6. Step 6: Final answer
    x = 28,371,987.60

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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.