Home / 87,403.10-120,612.69-51,604.65

Finding the Fourth Proportional to 87,403.10, 120,612.69 and 51,604.65

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Solution

The fourth proportional to 87,403.10, 120,612.69 and 51,604.65 is: 71,212.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,403.10 : 120,612.69 = 51,604.65 : x
  2. Step 2: Convert to fraction form
    87,403.10/120,612.69 = 51,604.65/x
  3. Step 3: Cross multiply
    87,403.10x = 120,612.69 × 51,604.65
  4. Step 4: Simplify right side
    87,403.10x = 6,224,175,653.01
  5. Step 5: Solve for x
    x = 6,224,175,653.01/87,403.10
  6. Step 6: Final answer
    x = 71,212.30

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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.