Home / 80,438.65-111,018.59-44,640.20

Finding the Fourth Proportional to 80,438.65, 111,018.59 and 44,640.20

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Solution

The fourth proportional to 80,438.65, 111,018.59 and 44,640.20 is: 61,610.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,438.65 : 111,018.59 = 44,640.20 : x
  2. Step 2: Convert to fraction form
    80,438.65/111,018.59 = 44,640.20/x
  3. Step 3: Cross multiply
    80,438.65x = 111,018.59 × 44,640.20
  4. Step 4: Simplify right side
    80,438.65x = 4,955,891,672.17
  5. Step 5: Solve for x
    x = 4,955,891,672.17/80,438.65
  6. Step 6: Final answer
    x = 61,610.82

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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.