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Finding the Fourth Proportional to 78,363.90, 108,140.67 and 44,369.82

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Solution

The fourth proportional to 78,363.90, 108,140.67 and 44,369.82 is: 61,229.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,363.90 : 108,140.67 = 44,369.82 : x
  2. Step 2: Convert to fraction form
    78,363.90/108,140.67 = 44,369.82/x
  3. Step 3: Cross multiply
    78,363.90x = 108,140.67 × 44,369.82
  4. Step 4: Simplify right side
    78,363.90x = 4,798,182,062.58
  5. Step 5: Solve for x
    x = 4,798,182,062.58/78,363.90
  6. Step 6: Final answer
    x = 61,229.50

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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.