Home / 84,315.60-126,473.40-21,986.10

Finding the Fourth Proportional to 84,315.60, 126,473.40 and 21,986.10

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Solution

The fourth proportional to 84,315.60, 126,473.40 and 21,986.10 is: 32,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,315.60 : 126,473.40 = 21,986.10 : x
  2. Step 2: Convert to fraction form
    84,315.60/126,473.40 = 21,986.10/x
  3. Step 3: Cross multiply
    84,315.60x = 126,473.40 × 21,986.10
  4. Step 4: Simplify right side
    84,315.60x = 2,780,656,819.74
  5. Step 5: Solve for x
    x = 2,780,656,819.74/84,315.60
  6. Step 6: Final answer
    x = 32,979.15

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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.