Home / 81,347.76-112,300.68-51,149.70

Finding the Fourth Proportional to 81,347.76, 112,300.68 and 51,149.70

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Solution

The fourth proportional to 81,347.76, 112,300.68 and 51,149.70 is: 70,612.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,347.76 : 112,300.68 = 51,149.70 : x
  2. Step 2: Convert to fraction form
    81,347.76/112,300.68 = 51,149.70/x
  3. Step 3: Cross multiply
    81,347.76x = 112,300.68 × 51,149.70
  4. Step 4: Simplify right side
    81,347.76x = 5,744,146,091.80
  5. Step 5: Solve for x
    x = 5,744,146,091.80/81,347.76
  6. Step 6: Final answer
    x = 70,612.22

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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.