Home / 87,333.50-120,514.56-51,515.30

Finding the Fourth Proportional to 87,333.50, 120,514.56 and 51,515.30

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Solution

The fourth proportional to 87,333.50, 120,514.56 and 51,515.30 is: 71,087.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,333.50 : 120,514.56 = 51,515.30 : x
  2. Step 2: Convert to fraction form
    87,333.50/120,514.56 = 51,515.30/x
  3. Step 3: Cross multiply
    87,333.50x = 120,514.56 × 51,515.30
  4. Step 4: Simplify right side
    87,333.50x = 6,208,343,712.77
  5. Step 5: Solve for x
    x = 6,208,343,712.77/87,333.50
  6. Step 6: Final answer
    x = 71,087.77

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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.