Home / 71,892.16-99,209.83-39,186.85

Finding the Fourth Proportional to 71,892.16, 99,209.83 and 39,186.85

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Solution

The fourth proportional to 71,892.16, 99,209.83 and 39,186.85 is: 54,077.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,892.16 : 99,209.83 = 39,186.85 : x
  2. Step 2: Convert to fraction form
    71,892.16/99,209.83 = 39,186.85/x
  3. Step 3: Cross multiply
    71,892.16x = 99,209.83 × 39,186.85
  4. Step 4: Simplify right side
    71,892.16x = 3,887,720,726.74
  5. Step 5: Solve for x
    x = 3,887,720,726.74/71,892.16
  6. Step 6: Final answer
    x = 54,077.12

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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.