Home / 71,512.36-98,689.26-39,684.22

Finding the Fourth Proportional to 71,512.36, 98,689.26 and 39,684.22

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Solution

The fourth proportional to 71,512.36, 98,689.26 and 39,684.22 is: 54,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,512.36 : 98,689.26 = 39,684.22 : x
  2. Step 2: Convert to fraction form
    71,512.36/98,689.26 = 39,684.22/x
  3. Step 3: Cross multiply
    71,512.36x = 98,689.26 × 39,684.22
  4. Step 4: Simplify right side
    71,512.36x = 3,916,406,305.48
  5. Step 5: Solve for x
    x = 3,916,406,305.48/71,512.36
  6. Step 6: Final answer
    x = 54,765.45

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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.