Home / 72,529.20-108,678.60-60,778.80

Finding the Fourth Proportional to 72,529.20, 108,678.60 and 60,778.80

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Solution

The fourth proportional to 72,529.20, 108,678.60 and 60,778.80 is: 91,071.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,529.20 : 108,678.60 = 60,778.80 : x
  2. Step 2: Convert to fraction form
    72,529.20/108,678.60 = 60,778.80/x
  3. Step 3: Cross multiply
    72,529.20x = 108,678.60 × 60,778.80
  4. Step 4: Simplify right side
    72,529.20x = 6,605,354,893.68
  5. Step 5: Solve for x
    x = 6,605,354,893.68/72,529.20
  6. Step 6: Final answer
    x = 91,071.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.