Home / 80,885,856.60-121,328,784.90-76,740,616.80

Finding the Fourth Proportional to 80,885,856.60, 121,328,784.90 and 76,740,616.80

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Solution

The fourth proportional to 80,885,856.60, 121,328,784.90 and 76,740,616.80 is: 115,110,925.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,885,856.60 : 121,328,784.90 = 76,740,616.80 : x
  2. Step 2: Convert to fraction form
    80,885,856.60/121,328,784.90 = 76,740,616.80/x
  3. Step 3: Cross multiply
    80,885,856.60x = 121,328,784.90 × 76,740,616.80
  4. Step 4: Simplify right side
    80,885,856.60x = 9,310,845,788,820,526
  5. Step 5: Solve for x
    x = 9,310,845,788,820,526/80,885,856.60
  6. Step 6: Final answer
    x = 115,110,925.20

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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.