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Finding the Fourth Proportional to 81,657,003.60, 122,541,492.60 and 36,251,384.40

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Solution

The fourth proportional to 81,657,003.60, 122,541,492.60 and 36,251,384.40 is: 54,401,931.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,003.60 : 122,541,492.60 = 36,251,384.40 : x
  2. Step 2: Convert to fraction form
    81,657,003.60/122,541,492.60 = 36,251,384.40/x
  3. Step 3: Cross multiply
    81,657,003.60x = 122,541,492.60 × 36,251,384.40
  4. Step 4: Simplify right side
    81,657,003.60x = 4,442,298,753,192,355
  5. Step 5: Solve for x
    x = 4,442,298,753,192,355/81,657,003.60
  6. Step 6: Final answer
    x = 54,401,931.95

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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.