Home / 81,009.20-111,798.36-45,206.18

Finding the Fourth Proportional to 81,009.20, 111,798.36 and 45,206.18

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Solution

The fourth proportional to 81,009.20, 111,798.36 and 45,206.18 is: 62,387.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,009.20 : 111,798.36 = 45,206.18 : x
  2. Step 2: Convert to fraction form
    81,009.20/111,798.36 = 45,206.18/x
  3. Step 3: Cross multiply
    81,009.20x = 111,798.36 × 45,206.18
  4. Step 4: Simplify right side
    81,009.20x = 5,053,976,785.86
  5. Step 5: Solve for x
    x = 5,053,976,785.86/81,009.20
  6. Step 6: Final answer
    x = 62,387.69

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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.