Home / 72,816.40-100,517.60-48,956.90

Finding the Fourth Proportional to 72,816.40, 100,517.60 and 48,956.90

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Solution

The fourth proportional to 72,816.40, 100,517.60 and 48,956.90 is: 67,581.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,816.40 : 100,517.60 = 48,956.90 : x
  2. Step 2: Convert to fraction form
    72,816.40/100,517.60 = 48,956.90/x
  3. Step 3: Cross multiply
    72,816.40x = 100,517.60 × 48,956.90
  4. Step 4: Simplify right side
    72,816.40x = 4,921,029,846.66
  5. Step 5: Solve for x
    x = 4,921,029,846.66/72,816.40
  6. Step 6: Final answer
    x = 67,581.34

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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.