Home / 81,197.64-112,052.42-45,387.72

Finding the Fourth Proportional to 81,197.64, 112,052.42 and 45,387.72

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Solution

The fourth proportional to 81,197.64, 112,052.42 and 45,387.72 is: 62,634.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,197.64 : 112,052.42 = 45,387.72 : x
  2. Step 2: Convert to fraction form
    81,197.64/112,052.42 = 45,387.72/x
  3. Step 3: Cross multiply
    81,197.64x = 112,052.42 × 45,387.72
  4. Step 4: Simplify right side
    81,197.64x = 5,085,803,864.28
  5. Step 5: Solve for x
    x = 5,085,803,864.28/81,197.64
  6. Step 6: Final answer
    x = 62,634.87

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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.