Home / 71,386.87-98,509.77-39,115.18

Finding the Fourth Proportional to 71,386.87, 98,509.77 and 39,115.18

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Solution

The fourth proportional to 71,386.87, 98,509.77 and 39,115.18 is: 53,976.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,386.87 : 98,509.77 = 39,115.18 : x
  2. Step 2: Convert to fraction form
    71,386.87/98,509.77 = 39,115.18/x
  3. Step 3: Cross multiply
    71,386.87x = 98,509.77 × 39,115.18
  4. Step 4: Simplify right side
    71,386.87x = 3,853,227,231.39
  5. Step 5: Solve for x
    x = 3,853,227,231.39/71,386.87
  6. Step 6: Final answer
    x = 53,976.69

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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.