Home / 57,287.28-85,919.81-28,816.65

Finding the Fourth Proportional to 57,287.28, 85,919.81 and 28,816.65

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Solution

The fourth proportional to 57,287.28, 85,919.81 and 28,816.65 is: 43,219.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,287.28 : 85,919.81 = 28,816.65 : x
  2. Step 2: Convert to fraction form
    57,287.28/85,919.81 = 28,816.65/x
  3. Step 3: Cross multiply
    57,287.28x = 85,919.81 × 28,816.65
  4. Step 4: Simplify right side
    57,287.28x = 2,475,920,948.75
  5. Step 5: Solve for x
    x = 2,475,920,948.75/57,287.28
  6. Step 6: Final answer
    x = 43,219.38

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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.