Home / 57,948.13-86,929.49-20,499.40

Finding the Fourth Proportional to 57,948.13, 86,929.49 and 20,499.40

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Solution

The fourth proportional to 57,948.13, 86,929.49 and 20,499.40 is: 30,751.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,948.13 : 86,929.49 = 20,499.40 : x
  2. Step 2: Convert to fraction form
    57,948.13/86,929.49 = 20,499.40/x
  3. Step 3: Cross multiply
    57,948.13x = 86,929.49 × 20,499.40
  4. Step 4: Simplify right side
    57,948.13x = 1,782,002,387.31
  5. Step 5: Solve for x
    x = 1,782,002,387.31/57,948.13
  6. Step 6: Final answer
    x = 30,751.68

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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.