Home / 87,643,045.20-120,909,384.12-52,815,944.88

Finding the Fourth Proportional to 87,643,045.20, 120,909,384.12 and 52,815,944.88

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Solution

The fourth proportional to 87,643,045.20, 120,909,384.12 and 52,815,944.88 is: 72,863,093.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,643,045.20 : 120,909,384.12 = 52,815,944.88 : x
  2. Step 2: Convert to fraction form
    87,643,045.20/120,909,384.12 = 52,815,944.88/x
  3. Step 3: Cross multiply
    87,643,045.20x = 120,909,384.12 × 52,815,944.88
  4. Step 4: Simplify right side
    87,643,045.20x = 6,385,943,367,156,668
  5. Step 5: Solve for x
    x = 6,385,943,367,156,668/87,643,045.20
  6. Step 6: Final answer
    x = 72,863,093.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.