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Finding the Fourth Proportional to 77,898.87, 107,589.11 and 52,360.89

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Solution

The fourth proportional to 77,898.87, 107,589.11 and 52,360.89 is: 72,317.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,898.87 : 107,589.11 = 52,360.89 : x
  2. Step 2: Convert to fraction form
    77,898.87/107,589.11 = 52,360.89/x
  3. Step 3: Cross multiply
    77,898.87x = 107,589.11 × 52,360.89
  4. Step 4: Simplify right side
    77,898.87x = 5,633,461,553.91
  5. Step 5: Solve for x
    x = 5,633,461,553.91/77,898.87
  6. Step 6: Final answer
    x = 72,317.63

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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.