Home / 81,203,622.60-121,805,433.90-48,918,581.85

Finding the Fourth Proportional to 81,203,622.60, 121,805,433.90 and 48,918,581.85

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Solution

The fourth proportional to 81,203,622.60, 121,805,433.90 and 48,918,581.85 is: 73,377,872.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,203,622.60 : 121,805,433.90 = 48,918,581.85 : x
  2. Step 2: Convert to fraction form
    81,203,622.60/121,805,433.90 = 48,918,581.85/x
  3. Step 3: Cross multiply
    81,203,622.60x = 121,805,433.90 × 48,918,581.85
  4. Step 4: Simplify right side
    81,203,622.60x = 5,958,549,088,011,915
  5. Step 5: Solve for x
    x = 5,958,549,088,011,915/81,203,622.60
  6. Step 6: Final answer
    x = 73,377,872.78

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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.