Home / 87,039.75-120,108.57-51,224.90

Finding the Fourth Proportional to 87,039.75, 120,108.57 and 51,224.90

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Solution

The fourth proportional to 87,039.75, 120,108.57 and 51,224.90 is: 70,686.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,039.75 : 120,108.57 = 51,224.90 : x
  2. Step 2: Convert to fraction form
    87,039.75/120,108.57 = 51,224.90/x
  3. Step 3: Cross multiply
    87,039.75x = 120,108.57 × 51,224.90
  4. Step 4: Simplify right side
    87,039.75x = 6,152,548,886.85
  5. Step 5: Solve for x
    x = 6,152,548,886.85/87,039.75
  6. Step 6: Final answer
    x = 70,686.66

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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.