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Finding the Fourth Proportional to 77,514.78, 116,250.90 and 21,341.70

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Solution

The fourth proportional to 77,514.78, 116,250.90 and 21,341.70 is: 32,006.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,514.78 : 116,250.90 = 21,341.70 : x
  2. Step 2: Convert to fraction form
    77,514.78/116,250.90 = 21,341.70/x
  3. Step 3: Cross multiply
    77,514.78x = 116,250.90 × 21,341.70
  4. Step 4: Simplify right side
    77,514.78x = 2,480,991,832.53
  5. Step 5: Solve for x
    x = 2,480,991,832.53/77,514.78
  6. Step 6: Final answer
    x = 32,006.69

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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.