Home / 77,980.83-107,613.05-42,170.73

Finding the Fourth Proportional to 77,980.83, 107,613.05 and 42,170.73

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Solution

The fourth proportional to 77,980.83, 107,613.05 and 42,170.73 is: 58,195.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,980.83 : 107,613.05 = 42,170.73 : x
  2. Step 2: Convert to fraction form
    77,980.83/107,613.05 = 42,170.73/x
  3. Step 3: Cross multiply
    77,980.83x = 107,613.05 × 42,170.73
  4. Step 4: Simplify right side
    77,980.83x = 4,538,120,876.03
  5. Step 5: Solve for x
    x = 4,538,120,876.03/77,980.83
  6. Step 6: Final answer
    x = 58,195.34

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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.