Home / 99,987.32-138,017.24-57,562.76

Finding the Fourth Proportional to 99,987.32, 138,017.24 and 57,562.76

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Solution

The fourth proportional to 99,987.32, 138,017.24 and 57,562.76 is: 79,456.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,987.32 : 138,017.24 = 57,562.76 : x
  2. Step 2: Convert to fraction form
    99,987.32/138,017.24 = 57,562.76/x
  3. Step 3: Cross multiply
    99,987.32x = 138,017.24 × 57,562.76
  4. Step 4: Simplify right side
    99,987.32x = 7,944,652,715.80
  5. Step 5: Solve for x
    x = 7,944,652,715.80/99,987.32
  6. Step 6: Final answer
    x = 79,456.61

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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.