Home / 81,491,718.12-112,487,822.92-48,451,888.43

Finding the Fourth Proportional to 81,491,718.12, 112,487,822.92 and 48,451,888.43

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Solution

The fourth proportional to 81,491,718.12, 112,487,822.92 and 48,451,888.43 is: 66,880,998.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,491,718.12 : 112,487,822.92 = 48,451,888.43 : x
  2. Step 2: Convert to fraction form
    81,491,718.12/112,487,822.92 = 48,451,888.43/x
  3. Step 3: Cross multiply
    81,491,718.12x = 112,487,822.92 × 48,451,888.43
  4. Step 4: Simplify right side
    81,491,718.12x = 5,450,247,445,853,437
  5. Step 5: Solve for x
    x = 5,450,247,445,853,437/81,491,718.12
  6. Step 6: Final answer
    x = 66,880,998.11

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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.