Home / 80,885,853.60-121,328,780.40-76,740,613.80

Finding the Fourth Proportional to 80,885,853.60, 121,328,780.40 and 76,740,613.80

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Solution

The fourth proportional to 80,885,853.60, 121,328,780.40 and 76,740,613.80 is: 115,110,920.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,885,853.60 : 121,328,780.40 = 76,740,613.80 : x
  2. Step 2: Convert to fraction form
    80,885,853.60/121,328,780.40 = 76,740,613.80/x
  3. Step 3: Cross multiply
    80,885,853.60x = 121,328,780.40 × 76,740,613.80
  4. Step 4: Simplify right side
    80,885,853.60x = 9,310,845,079,501,410
  5. Step 5: Solve for x
    x = 9,310,845,079,501,410/80,885,853.60
  6. Step 6: Final answer
    x = 115,110,920.70

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1.5x scale

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.