Home / 81,650,711.20-122,192,631.60-74,848,266.40

Finding the Fourth Proportional to 81,650,711.20, 122,192,631.60 and 74,848,266.40

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Solution

The fourth proportional to 81,650,711.20, 122,192,631.60 and 74,848,266.40 is: 112,012,577.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,650,711.20 : 122,192,631.60 = 74,848,266.40 : x
  2. Step 2: Convert to fraction form
    81,650,711.20/122,192,631.60 = 74,848,266.40/x
  3. Step 3: Cross multiply
    81,650,711.20x = 122,192,631.60 × 74,848,266.40
  4. Step 4: Simplify right side
    81,650,711.20x = 9,145,906,642,113,858
  5. Step 5: Solve for x
    x = 9,145,906,642,113,858/81,650,711.20
  6. Step 6: Final answer
    x = 112,012,577.82

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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.