Home / 84,218.36-126,340.50-28,039.20

Finding the Fourth Proportional to 84,218.36, 126,340.50 and 28,039.20

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Solution

The fourth proportional to 84,218.36, 126,340.50 and 28,039.20 is: 42,063.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,218.36 : 126,340.50 = 28,039.20 : x
  2. Step 2: Convert to fraction form
    84,218.36/126,340.50 = 28,039.20/x
  3. Step 3: Cross multiply
    84,218.36x = 126,340.50 × 28,039.20
  4. Step 4: Simplify right side
    84,218.36x = 3,542,486,547.60
  5. Step 5: Solve for x
    x = 3,542,486,547.60/84,218.36
  6. Step 6: Final answer
    x = 42,063.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.