Home / 87,438.24-120,658.56-51,626.40

Finding the Fourth Proportional to 87,438.24, 120,658.56 and 51,626.40

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Solution

The fourth proportional to 87,438.24, 120,658.56 and 51,626.40 is: 71,240.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,438.24 : 120,658.56 = 51,626.40 : x
  2. Step 2: Convert to fraction form
    87,438.24/120,658.56 = 51,626.40/x
  3. Step 3: Cross multiply
    87,438.24x = 120,658.56 × 51,626.40
  4. Step 4: Simplify right side
    87,438.24x = 6,229,167,081.98
  5. Step 5: Solve for x
    x = 6,229,167,081.98/87,438.24
  6. Step 6: Final answer
    x = 71,240.76

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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.