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Finding the Fourth Proportional to 78,494.80, 108,608.07 and 68,444.20

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Solution

The fourth proportional to 78,494.80, 108,608.07 and 68,444.20 is: 94,701.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,494.80 : 108,608.07 = 68,444.20 : x
  2. Step 2: Convert to fraction form
    78,494.80/108,608.07 = 68,444.20/x
  3. Step 3: Cross multiply
    78,494.80x = 108,608.07 × 68,444.20
  4. Step 4: Simplify right side
    78,494.80x = 7,433,592,464.69
  5. Step 5: Solve for x
    x = 7,433,592,464.69/78,494.80
  6. Step 6: Final answer
    x = 94,701.72

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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.