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Finding the Fourth Proportional to 115,586.88, 159,641.52 and 77,795.52

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Solution

The fourth proportional to 115,586.88, 159,641.52 and 77,795.52 is: 107,446.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,586.88 : 159,641.52 = 77,795.52 : x
  2. Step 2: Convert to fraction form
    115,586.88/159,641.52 = 77,795.52/x
  3. Step 3: Cross multiply
    115,586.88x = 159,641.52 × 77,795.52
  4. Step 4: Simplify right side
    115,586.88x = 12,419,395,061.99
  5. Step 5: Solve for x
    x = 12,419,395,061.99/115,586.88
  6. Step 6: Final answer
    x = 107,446.41

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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.