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Finding the Fourth Proportional to 57,545.40, 86,228.57 and 21,987.32

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Solution

The fourth proportional to 57,545.40, 86,228.57 and 21,987.32 is: 32,946.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,545.40 : 86,228.57 = 21,987.32 : x
  2. Step 2: Convert to fraction form
    57,545.40/86,228.57 = 21,987.32/x
  3. Step 3: Cross multiply
    57,545.40x = 86,228.57 × 21,987.32
  4. Step 4: Simplify right side
    57,545.40x = 1,895,934,620.65
  5. Step 5: Solve for x
    x = 1,895,934,620.65/57,545.40
  6. Step 6: Final answer
    x = 32,946.76

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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.