Home / 71,139.29-98,174.21-39,310.25

Finding the Fourth Proportional to 71,139.29, 98,174.21 and 39,310.25

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Solution

The fourth proportional to 71,139.29, 98,174.21 and 39,310.25 is: 54,249.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,139.29 : 98,174.21 = 39,310.25 : x
  2. Step 2: Convert to fraction form
    71,139.29/98,174.21 = 39,310.25/x
  3. Step 3: Cross multiply
    71,139.29x = 98,174.21 × 39,310.25
  4. Step 4: Simplify right side
    71,139.29x = 3,859,252,051.23
  5. Step 5: Solve for x
    x = 3,859,252,051.23/71,139.29
  6. Step 6: Final answer
    x = 54,249.24

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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.