Home / 82,377.20-123,565.81-20,047.70

Finding the Fourth Proportional to 82,377.20, 123,565.81 and 20,047.70

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Solution

The fourth proportional to 82,377.20, 123,565.81 and 20,047.70 is: 30,071.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,377.20 : 123,565.81 = 20,047.70 : x
  2. Step 2: Convert to fraction form
    82,377.20/123,565.81 = 20,047.70/x
  3. Step 3: Cross multiply
    82,377.20x = 123,565.81 × 20,047.70
  4. Step 4: Simplify right side
    82,377.20x = 2,477,210,289.14
  5. Step 5: Solve for x
    x = 2,477,210,289.14/82,377.20
  6. Step 6: Final answer
    x = 30,071.55

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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.