Home / 87,531.54-120,786.71-51,714.76

Finding the Fourth Proportional to 87,531.54, 120,786.71 and 51,714.76

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Solution

The fourth proportional to 87,531.54, 120,786.71 and 51,714.76 is: 71,362.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,531.54 : 120,786.71 = 51,714.76 : x
  2. Step 2: Convert to fraction form
    87,531.54/120,786.71 = 51,714.76/x
  3. Step 3: Cross multiply
    87,531.54x = 120,786.71 × 51,714.76
  4. Step 4: Simplify right side
    87,531.54x = 6,246,455,158.30
  5. Step 5: Solve for x
    x = 6,246,455,158.30/87,531.54
  6. Step 6: Final answer
    x = 71,362.34

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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.