Home / 82,947.60-124,421.40-20,618.10

Finding the Fourth Proportional to 82,947.60, 124,421.40 and 20,618.10

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Solution

The fourth proportional to 82,947.60, 124,421.40 and 20,618.10 is: 30,927.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,947.60 : 124,421.40 = 20,618.10 : x
  2. Step 2: Convert to fraction form
    82,947.60/124,421.40 = 20,618.10/x
  3. Step 3: Cross multiply
    82,947.60x = 124,421.40 × 20,618.10
  4. Step 4: Simplify right side
    82,947.60x = 2,565,332,867.34
  5. Step 5: Solve for x
    x = 2,565,332,867.34/82,947.60
  6. Step 6: Final answer
    x = 30,927.15

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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.