Home / 87,429.93-131,045.67-76,879.55

Finding the Fourth Proportional to 87,429.93, 131,045.67 and 76,879.55

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Solution

The fourth proportional to 87,429.93, 131,045.67 and 76,879.55 is: 115,232.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,429.93 : 131,045.67 = 76,879.55 : x
  2. Step 2: Convert to fraction form
    87,429.93/131,045.67 = 76,879.55/x
  3. Step 3: Cross multiply
    87,429.93x = 131,045.67 × 76,879.55
  4. Step 4: Simplify right side
    87,429.93x = 10,074,731,483.82
  5. Step 5: Solve for x
    x = 10,074,731,483.82/87,429.93
  6. Step 6: Final answer
    x = 115,232.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.