Home / 81,160.12-112,001.52-45,351.64

Finding the Fourth Proportional to 81,160.12, 112,001.52 and 45,351.64

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Solution

The fourth proportional to 81,160.12, 112,001.52 and 45,351.64 is: 62,585.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,160.12 : 112,001.52 = 45,351.64 : x
  2. Step 2: Convert to fraction form
    81,160.12/112,001.52 = 45,351.64/x
  3. Step 3: Cross multiply
    81,160.12x = 112,001.52 × 45,351.64
  4. Step 4: Simplify right side
    81,160.12x = 5,079,452,614.49
  5. Step 5: Solve for x
    x = 5,079,452,614.49/81,160.12
  6. Step 6: Final answer
    x = 62,585.57

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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.