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Finding the Fourth Proportional to 72,879.56, 100,620.20 and 59,482.76

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Solution

The fourth proportional to 72,879.56, 100,620.20 and 59,482.76 is: 82,124.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,879.56 : 100,620.20 = 59,482.76 : x
  2. Step 2: Convert to fraction form
    72,879.56/100,620.20 = 59,482.76/x
  3. Step 3: Cross multiply
    72,879.56x = 100,620.20 × 59,482.76
  4. Step 4: Simplify right side
    72,879.56x = 5,985,167,207.75
  5. Step 5: Solve for x
    x = 5,985,167,207.75/72,879.56
  6. Step 6: Final answer
    x = 82,124.09

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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.