Home / 77,981.39-116,959.88-25,390.52

Finding the Fourth Proportional to 77,981.39, 116,959.88 and 25,390.52

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Solution

The fourth proportional to 77,981.39, 116,959.88 and 25,390.52 is: 38,081.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,981.39 : 116,959.88 = 25,390.52 : x
  2. Step 2: Convert to fraction form
    77,981.39/116,959.88 = 25,390.52/x
  3. Step 3: Cross multiply
    77,981.39x = 116,959.88 × 25,390.52
  4. Step 4: Simplify right side
    77,981.39x = 2,969,672,528.21
  5. Step 5: Solve for x
    x = 2,969,672,528.21/77,981.39
  6. Step 6: Final answer
    x = 38,081.81

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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.