Home / 78,631.68-117,965.96-26,041.18

Finding the Fourth Proportional to 78,631.68, 117,965.96 and 26,041.18

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Solution

The fourth proportional to 78,631.68, 117,965.96 and 26,041.18 is: 39,067.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,631.68 : 117,965.96 = 26,041.18 : x
  2. Step 2: Convert to fraction form
    78,631.68/117,965.96 = 26,041.18/x
  3. Step 3: Cross multiply
    78,631.68x = 117,965.96 × 26,041.18
  4. Step 4: Simplify right side
    78,631.68x = 3,071,972,798.23
  5. Step 5: Solve for x
    x = 3,071,972,798.23/78,631.68
  6. Step 6: Final answer
    x = 39,067.88

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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.