Home / 81,610.68-112,601.16-49,777.68

Finding the Fourth Proportional to 81,610.68, 112,601.16 and 49,777.68

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Solution

The fourth proportional to 81,610.68, 112,601.16 and 49,777.68 is: 68,680.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,610.68 : 112,601.16 = 49,777.68 : x
  2. Step 2: Convert to fraction form
    81,610.68/112,601.16 = 49,777.68/x
  3. Step 3: Cross multiply
    81,610.68x = 112,601.16 × 49,777.68
  4. Step 4: Simplify right side
    81,610.68x = 5,605,024,510.11
  5. Step 5: Solve for x
    x = 5,605,024,510.11/81,610.68
  6. Step 6: Final answer
    x = 68,680.04

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1.5x scale

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.