Home / 87,234.10-120,389.26-49,510.78

Finding the Fourth Proportional to 87,234.10, 120,389.26 and 49,510.78

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Solution

The fourth proportional to 87,234.10, 120,389.26 and 49,510.78 is: 68,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,234.10 : 120,389.26 = 49,510.78 : x
  2. Step 2: Convert to fraction form
    87,234.10/120,389.26 = 49,510.78/x
  3. Step 3: Cross multiply
    87,234.10x = 120,389.26 × 49,510.78
  4. Step 4: Simplify right side
    87,234.10x = 5,960,566,166.22
  5. Step 5: Solve for x
    x = 5,960,566,166.22/87,234.10
  6. Step 6: Final answer
    x = 68,328.40

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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.