Home / 40,025,870.20-55,235,748.15-21,691,155.70

Finding the Fourth Proportional to 40,025,870.20, 55,235,748.15 and 21,691,155.70

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Solution

The fourth proportional to 40,025,870.20, 55,235,748.15 and 21,691,155.70 is: 29,933,820.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,025,870.20 : 55,235,748.15 = 21,691,155.70 : x
  2. Step 2: Convert to fraction form
    40,025,870.20/55,235,748.15 = 21,691,155.70/x
  3. Step 3: Cross multiply
    40,025,870.20x = 55,235,748.15 × 21,691,155.70
  4. Step 4: Simplify right side
    40,025,870.20x = 1,198,127,213,327,637
  5. Step 5: Solve for x
    x = 1,198,127,213,327,637/40,025,870.20
  6. Step 6: Final answer
    x = 29,933,820.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.