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Finding the Fourth Proportional to 79,263.78, 109,391.84 and 45,277.35

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Solution

The fourth proportional to 79,263.78, 109,391.84 and 45,277.35 is: 62,487.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,263.78 : 109,391.84 = 45,277.35 : x
  2. Step 2: Convert to fraction form
    79,263.78/109,391.84 = 45,277.35/x
  3. Step 3: Cross multiply
    79,263.78x = 109,391.84 × 45,277.35
  4. Step 4: Simplify right side
    79,263.78x = 4,952,972,626.82
  5. Step 5: Solve for x
    x = 4,952,972,626.82/79,263.78
  6. Step 6: Final answer
    x = 62,487.21

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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.