Home / 87,029.76-120,071.52-51,208.32

Finding the Fourth Proportional to 87,029.76, 120,071.52 and 51,208.32

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Solution

The fourth proportional to 87,029.76, 120,071.52 and 51,208.32 is: 70,650.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,029.76 : 120,071.52 = 51,208.32 : x
  2. Step 2: Convert to fraction form
    87,029.76/120,071.52 = 51,208.32/x
  3. Step 3: Cross multiply
    87,029.76x = 120,071.52 × 51,208.32
  4. Step 4: Simplify right side
    87,029.76x = 6,148,660,819.05
  5. Step 5: Solve for x
    x = 6,148,660,819.05/87,029.76
  6. Step 6: Final answer
    x = 70,650.10

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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.