Home / 87,409.20-131,113.80-28,246.80

Finding the Fourth Proportional to 87,409.20, 131,113.80 and 28,246.80

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Solution

The fourth proportional to 87,409.20, 131,113.80 and 28,246.80 is: 42,370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,409.20 : 131,113.80 = 28,246.80 : x
  2. Step 2: Convert to fraction form
    87,409.20/131,113.80 = 28,246.80/x
  3. Step 3: Cross multiply
    87,409.20x = 131,113.80 × 28,246.80
  4. Step 4: Simplify right side
    87,409.20x = 3,703,545,285.84
  5. Step 5: Solve for x
    x = 3,703,545,285.84/87,409.20
  6. Step 6: Final answer
    x = 42,370.20

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1.5x scale

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.