Home / 87,005.13-120,061.33-51,188.19

Finding the Fourth Proportional to 87,005.13, 120,061.33 and 51,188.19

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Solution

The fourth proportional to 87,005.13, 120,061.33 and 51,188.19 is: 70,636.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,005.13 : 120,061.33 = 51,188.19 : x
  2. Step 2: Convert to fraction form
    87,005.13/120,061.33 = 51,188.19/x
  3. Step 3: Cross multiply
    87,005.13x = 120,061.33 × 51,188.19
  4. Step 4: Simplify right side
    87,005.13x = 6,145,722,171.69
  5. Step 5: Solve for x
    x = 6,145,722,171.69/87,005.13
  6. Step 6: Final answer
    x = 70,636.32

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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.