Home / 71,130.36-98,161.88-39,301.28

Finding the Fourth Proportional to 71,130.36, 98,161.88 and 39,301.28

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Solution

The fourth proportional to 71,130.36, 98,161.88 and 39,301.28 is: 54,236.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,130.36 : 98,161.88 = 39,301.28 : x
  2. Step 2: Convert to fraction form
    71,130.36/98,161.88 = 39,301.28/x
  3. Step 3: Cross multiply
    71,130.36x = 98,161.88 × 39,301.28
  4. Step 4: Simplify right side
    71,130.36x = 3,857,887,531.21
  5. Step 5: Solve for x
    x = 3,857,887,531.21/71,130.36
  6. Step 6: Final answer
    x = 54,236.86

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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.