Home / 51,319.30-70,819.25-28,657.66

Finding the Fourth Proportional to 51,319.30, 70,819.25 and 28,657.66

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Solution

The fourth proportional to 51,319.30, 70,819.25 and 28,657.66 is: 39,546.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,319.30 : 70,819.25 = 28,657.66 : x
  2. Step 2: Convert to fraction form
    51,319.30/70,819.25 = 28,657.66/x
  3. Step 3: Cross multiply
    51,319.30x = 70,819.25 × 28,657.66
  4. Step 4: Simplify right side
    51,319.30x = 2,029,513,987.96
  5. Step 5: Solve for x
    x = 2,029,513,987.96/51,319.30
  6. Step 6: Final answer
    x = 39,546.80

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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.