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Finding the Fourth Proportional to 72,820.62, 100,523.53 and 48,961.13

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Solution

The fourth proportional to 72,820.62, 100,523.53 and 48,961.13 is: 67,587.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,820.62 : 100,523.53 = 48,961.13 : x
  2. Step 2: Convert to fraction form
    72,820.62/100,523.53 = 48,961.13/x
  3. Step 3: Cross multiply
    72,820.62x = 100,523.53 × 48,961.13
  4. Step 4: Simplify right side
    72,820.62x = 4,921,745,178.97
  5. Step 5: Solve for x
    x = 4,921,745,178.97/72,820.62
  6. Step 6: Final answer
    x = 67,587.25

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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.