Home / 79,986,053.76-120,170,486.40-51,288,414.72

Finding the Fourth Proportional to 79,986,053.76, 120,170,486.40 and 51,288,414.72

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Solution

The fourth proportional to 79,986,053.76, 120,170,486.40 and 51,288,414.72 is: 77,055,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,986,053.76 : 120,170,486.40 = 51,288,414.72 : x
  2. Step 2: Convert to fraction form
    79,986,053.76/120,170,486.40 = 51,288,414.72/x
  3. Step 3: Cross multiply
    79,986,053.76x = 120,170,486.40 × 51,288,414.72
  4. Step 4: Simplify right side
    79,986,053.76x = 6,163,353,743,587,320
  5. Step 5: Solve for x
    x = 6,163,353,743,587,320/79,986,053.76
  6. Step 6: Final answer
    x = 77,055,354.70

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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.