Home / 60,739.05-91,109.03-39,689.18

Finding the Fourth Proportional to 60,739.05, 91,109.03 and 39,689.18

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Solution

The fourth proportional to 60,739.05, 91,109.03 and 39,689.18 is: 59,534.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,739.05 : 91,109.03 = 39,689.18 : x
  2. Step 2: Convert to fraction form
    60,739.05/91,109.03 = 39,689.18/x
  3. Step 3: Cross multiply
    60,739.05x = 91,109.03 × 39,689.18
  4. Step 4: Simplify right side
    60,739.05x = 3,616,042,691.30
  5. Step 5: Solve for x
    x = 3,616,042,691.30/60,739.05
  6. Step 6: Final answer
    x = 59,534.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.