Home / 81,708.18-112,767.78-45,898.20

Finding the Fourth Proportional to 81,708.18, 112,767.78 and 45,898.20

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Solution

The fourth proportional to 81,708.18, 112,767.78 and 45,898.20 is: 63,345.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,708.18 : 112,767.78 = 45,898.20 : x
  2. Step 2: Convert to fraction form
    81,708.18/112,767.78 = 45,898.20/x
  3. Step 3: Cross multiply
    81,708.18x = 112,767.78 × 45,898.20
  4. Step 4: Simplify right side
    81,708.18x = 5,175,838,120.00
  5. Step 5: Solve for x
    x = 5,175,838,120.00/81,708.18
  6. Step 6: Final answer
    x = 63,345.41

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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.