Home / 80,885,877.60-121,328,816.40-76,740,637.80

Finding the Fourth Proportional to 80,885,877.60, 121,328,816.40 and 76,740,637.80

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Solution

The fourth proportional to 80,885,877.60, 121,328,816.40 and 76,740,637.80 is: 115,110,956.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,885,877.60 : 121,328,816.40 = 76,740,637.80 : x
  2. Step 2: Convert to fraction form
    80,885,877.60/121,328,816.40 = 76,740,637.80/x
  3. Step 3: Cross multiply
    80,885,877.60x = 121,328,816.40 × 76,740,637.80
  4. Step 4: Simplify right side
    80,885,877.60x = 9,310,850,754,055,100
  5. Step 5: Solve for x
    x = 9,310,850,754,055,100/80,885,877.60
  6. Step 6: Final answer
    x = 115,110,956.70

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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.