Home / 71,112.13-98,134.13-39,280.34

Finding the Fourth Proportional to 71,112.13, 98,134.13 and 39,280.34

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Solution

The fourth proportional to 71,112.13, 98,134.13 and 39,280.34 is: 54,206.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,112.13 : 98,134.13 = 39,280.34 : x
  2. Step 2: Convert to fraction form
    71,112.13/98,134.13 = 39,280.34/x
  3. Step 3: Cross multiply
    71,112.13x = 98,134.13 × 39,280.34
  4. Step 4: Simplify right side
    71,112.13x = 3,854,742,335.54
  5. Step 5: Solve for x
    x = 3,854,742,335.54/71,112.13
  6. Step 6: Final answer
    x = 54,206.54

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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.