Home / 80,885,931.60-121,328,897.40-76,740,691.80

Finding the Fourth Proportional to 80,885,931.60, 121,328,897.40 and 76,740,691.80

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Solution

The fourth proportional to 80,885,931.60, 121,328,897.40 and 76,740,691.80 is: 115,111,037.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,885,931.60 : 121,328,897.40 = 76,740,691.80 : x
  2. Step 2: Convert to fraction form
    80,885,931.60/121,328,897.40 = 76,740,691.80/x
  3. Step 3: Cross multiply
    80,885,931.60x = 121,328,897.40 × 76,740,691.80
  4. Step 4: Simplify right side
    80,885,931.60x = 9,310,863,521,807,222
  5. Step 5: Solve for x
    x = 9,310,863,521,807,222/80,885,931.60
  6. Step 6: Final answer
    x = 115,111,037.70

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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.