Home / 83,529.05-115,158.57-66,358.39

Finding the Fourth Proportional to 83,529.05, 115,158.57 and 66,358.39

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Solution

The fourth proportional to 83,529.05, 115,158.57 and 66,358.39 is: 91,485.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,529.05 : 115,158.57 = 66,358.39 : x
  2. Step 2: Convert to fraction form
    83,529.05/115,158.57 = 66,358.39/x
  3. Step 3: Cross multiply
    83,529.05x = 115,158.57 × 66,358.39
  4. Step 4: Simplify right side
    83,529.05x = 7,641,736,392.32
  5. Step 5: Solve for x
    x = 7,641,736,392.32/83,529.05
  6. Step 6: Final answer
    x = 91,485.98

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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.