Home / 83,642.32-125,430.75-30,321.64

Finding the Fourth Proportional to 83,642.32, 125,430.75 and 30,321.64

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Solution

The fourth proportional to 83,642.32, 125,430.75 and 30,321.64 is: 45,470.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,642.32 : 125,430.75 = 30,321.64 : x
  2. Step 2: Convert to fraction form
    83,642.32/125,430.75 = 30,321.64/x
  3. Step 3: Cross multiply
    83,642.32x = 125,430.75 × 30,321.64
  4. Step 4: Simplify right side
    83,642.32x = 3,803,266,046.43
  5. Step 5: Solve for x
    x = 3,803,266,046.43/83,642.32
  6. Step 6: Final answer
    x = 45,470.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.