Home / 87,188.47-120,305.75-51,373.61

Finding the Fourth Proportional to 87,188.47, 120,305.75 and 51,373.61

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Solution

The fourth proportional to 87,188.47, 120,305.75 and 51,373.61 is: 70,887.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,188.47 : 120,305.75 = 51,373.61 : x
  2. Step 2: Convert to fraction form
    87,188.47/120,305.75 = 51,373.61/x
  3. Step 3: Cross multiply
    87,188.47x = 120,305.75 × 51,373.61
  4. Step 4: Simplify right side
    87,188.47x = 6,180,540,274.01
  5. Step 5: Solve for x
    x = 6,180,540,274.01/87,188.47
  6. Step 6: Final answer
    x = 70,887.13

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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.