Home / 39,210-54,073.13-30,243.30

Finding the Fourth Proportional to 39,210, 54,073.13 and 30,243.30

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Solution

The fourth proportional to 39,210, 54,073.13 and 30,243.30 is: 41,707.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,210 : 54,073.13 = 30,243.30 : x
  2. Step 2: Convert to fraction form
    39,210/54,073.13 = 30,243.30/x
  3. Step 3: Cross multiply
    39,210x = 54,073.13 × 30,243.30
  4. Step 4: Simplify right side
    39,210x = 1,635,349,741.31
  5. Step 5: Solve for x
    x = 1,635,349,741.31/39,210
  6. Step 6: Final answer
    x = 41,707.47

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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.