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Finding the Fourth Proportional to 77,174.52, 106,514.48 and 45,343.40

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Solution

The fourth proportional to 77,174.52, 106,514.48 and 45,343.40 is: 62,581.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,174.52 : 106,514.48 = 45,343.40 : x
  2. Step 2: Convert to fraction form
    77,174.52/106,514.48 = 45,343.40/x
  3. Step 3: Cross multiply
    77,174.52x = 106,514.48 × 45,343.40
  4. Step 4: Simplify right side
    77,174.52x = 4,829,728,672.43
  5. Step 5: Solve for x
    x = 4,829,728,672.43/77,174.52
  6. Step 6: Final answer
    x = 62,581.91

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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.