Home / 87,678.13-121,007.67-49,445.54

Finding the Fourth Proportional to 87,678.13, 121,007.67 and 49,445.54

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Solution

The fourth proportional to 87,678.13, 121,007.67 and 49,445.54 is: 68,241.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,678.13 : 121,007.67 = 49,445.54 : x
  2. Step 2: Convert to fraction form
    87,678.13/121,007.67 = 49,445.54/x
  3. Step 3: Cross multiply
    87,678.13x = 121,007.67 × 49,445.54
  4. Step 4: Simplify right side
    87,678.13x = 5,983,289,587.29
  5. Step 5: Solve for x
    x = 5,983,289,587.29/87,678.13
  6. Step 6: Final answer
    x = 68,241.53

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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.