Home / 56,641.20-78,159.24-43,221.12

Finding the Fourth Proportional to 56,641.20, 78,159.24 and 43,221.12

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Solution

The fourth proportional to 56,641.20, 78,159.24 and 43,221.12 is: 59,640.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,641.20 : 78,159.24 = 43,221.12 : x
  2. Step 2: Convert to fraction form
    56,641.20/78,159.24 = 43,221.12/x
  3. Step 3: Cross multiply
    56,641.20x = 78,159.24 × 43,221.12
  4. Step 4: Simplify right side
    56,641.20x = 3,378,129,891.15
  5. Step 5: Solve for x
    x = 3,378,129,891.15/56,641.20
  6. Step 6: Final answer
    x = 59,640.86

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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.