Home / 87,695.06-120,939.75-57,469.50

Finding the Fourth Proportional to 87,695.06, 120,939.75 and 57,469.50

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Solution

The fourth proportional to 87,695.06, 120,939.75 and 57,469.50 is: 79,255.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,695.06 : 120,939.75 = 57,469.50 : x
  2. Step 2: Convert to fraction form
    87,695.06/120,939.75 = 57,469.50/x
  3. Step 3: Cross multiply
    87,695.06x = 120,939.75 × 57,469.50
  4. Step 4: Simplify right side
    87,695.06x = 6,950,346,962.63
  5. Step 5: Solve for x
    x = 6,950,346,962.63/87,695.06
  6. Step 6: Final answer
    x = 79,255.86

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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.