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Finding the Fourth Proportional to 78,352.65, 108,129.12 and 44,360.55

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Solution

The fourth proportional to 78,352.65, 108,129.12 and 44,360.55 is: 61,218.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,352.65 : 108,129.12 = 44,360.55 : x
  2. Step 2: Convert to fraction form
    78,352.65/108,129.12 = 44,360.55/x
  3. Step 3: Cross multiply
    78,352.65x = 108,129.12 × 44,360.55
  4. Step 4: Simplify right side
    78,352.65x = 4,796,667,234.22
  5. Step 5: Solve for x
    x = 4,796,667,234.22/78,352.65
  6. Step 6: Final answer
    x = 61,218.95

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1.5x scale

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.