Home / 87,823-121,162.66-57,624.99

Finding the Fourth Proportional to 87,823, 121,162.66 and 57,624.99

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Solution

The fourth proportional to 87,823, 121,162.66 and 57,624.99 is: 79,500.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,823 : 121,162.66 = 57,624.99 : x
  2. Step 2: Convert to fraction form
    87,823/121,162.66 = 57,624.99/x
  3. Step 3: Cross multiply
    87,823x = 121,162.66 × 57,624.99
  4. Step 4: Simplify right side
    87,823x = 6,981,997,070.87
  5. Step 5: Solve for x
    x = 6,981,997,070.87/87,823
  6. Step 6: Final answer
    x = 79,500.78

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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.