Home / 83,528.80-115,158.22-66,358.13

Finding the Fourth Proportional to 83,528.80, 115,158.22 and 66,358.13

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Solution

The fourth proportional to 83,528.80, 115,158.22 and 66,358.13 is: 91,485.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,528.80 : 115,158.22 = 66,358.13 : x
  2. Step 2: Convert to fraction form
    83,528.80/115,158.22 = 66,358.13/x
  3. Step 3: Cross multiply
    83,528.80x = 115,158.22 × 66,358.13
  4. Step 4: Simplify right side
    83,528.80x = 7,641,684,133.33
  5. Step 5: Solve for x
    x = 7,641,684,133.33/83,528.80
  6. Step 6: Final answer
    x = 91,485.63

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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.