Home / 83,385.64-115,072.25-45,145.21

Finding the Fourth Proportional to 83,385.64, 115,072.25 and 45,145.21

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Solution

The fourth proportional to 83,385.64, 115,072.25 and 45,145.21 is: 62,300.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,385.64 : 115,072.25 = 45,145.21 : x
  2. Step 2: Convert to fraction form
    83,385.64/115,072.25 = 45,145.21/x
  3. Step 3: Cross multiply
    83,385.64x = 115,072.25 × 45,145.21
  4. Step 4: Simplify right side
    83,385.64x = 5,194,960,716.60
  5. Step 5: Solve for x
    x = 5,194,960,716.60/83,385.64
  6. Step 6: Final answer
    x = 62,300.43

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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.