Home / 39,829.68-59,781.40-20,122.08

Finding the Fourth Proportional to 39,829.68, 59,781.40 and 20,122.08

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Solution

The fourth proportional to 39,829.68, 59,781.40 and 20,122.08 is: 30,201.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,829.68 : 59,781.40 = 20,122.08 : x
  2. Step 2: Convert to fraction form
    39,829.68/59,781.40 = 20,122.08/x
  3. Step 3: Cross multiply
    39,829.68x = 59,781.40 × 20,122.08
  4. Step 4: Simplify right side
    39,829.68x = 1,202,926,113.31
  5. Step 5: Solve for x
    x = 1,202,926,113.31/39,829.68
  6. Step 6: Final answer
    x = 30,201.75

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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.