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Finding the Fourth Proportional to 77,716.59, 116,574.88 and 21,556.71

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Solution

The fourth proportional to 77,716.59, 116,574.88 and 21,556.71 is: 32,335.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,716.59 : 116,574.88 = 21,556.71 : x
  2. Step 2: Convert to fraction form
    77,716.59/116,574.88 = 21,556.71/x
  3. Step 3: Cross multiply
    77,716.59x = 116,574.88 × 21,556.71
  4. Step 4: Simplify right side
    77,716.59x = 2,512,970,472.20
  5. Step 5: Solve for x
    x = 2,512,970,472.20/77,716.59
  6. Step 6: Final answer
    x = 32,335.06

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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.