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Finding the Fourth Proportional to 77,324.40, 115,060.32 and 77,061.96

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Solution

The fourth proportional to 77,324.40, 115,060.32 and 77,061.96 is: 114,669.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,324.40 : 115,060.32 = 77,061.96 : x
  2. Step 2: Convert to fraction form
    77,324.40/115,060.32 = 77,061.96/x
  3. Step 3: Cross multiply
    77,324.40x = 115,060.32 × 77,061.96
  4. Step 4: Simplify right side
    77,324.40x = 8,866,773,777.43
  5. Step 5: Solve for x
    x = 8,866,773,777.43/77,324.40
  6. Step 6: Final answer
    x = 114,669.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.