Home / 39,943.33-55,082.40-30,987.55

Finding the Fourth Proportional to 39,943.33, 55,082.40 and 30,987.55

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Solution

The fourth proportional to 39,943.33, 55,082.40 and 30,987.55 is: 42,732.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,943.33 : 55,082.40 = 30,987.55 : x
  2. Step 2: Convert to fraction form
    39,943.33/55,082.40 = 30,987.55/x
  3. Step 3: Cross multiply
    39,943.33x = 55,082.40 × 30,987.55
  4. Step 4: Simplify right side
    39,943.33x = 1,706,868,624.12
  5. Step 5: Solve for x
    x = 1,706,868,624.12/39,943.33
  6. Step 6: Final answer
    x = 42,732.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.