Home / 83,381.49-115,084.32-53,159.85

Finding the Fourth Proportional to 83,381.49, 115,084.32 and 53,159.85

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Solution

The fourth proportional to 83,381.49, 115,084.32 and 53,159.85 is: 73,371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,381.49 : 115,084.32 = 53,159.85 : x
  2. Step 2: Convert to fraction form
    83,381.49/115,084.32 = 53,159.85/x
  3. Step 3: Cross multiply
    83,381.49x = 115,084.32 × 53,159.85
  4. Step 4: Simplify right side
    83,381.49x = 6,117,864,613.13
  5. Step 5: Solve for x
    x = 6,117,864,613.13/83,381.49
  6. Step 6: Final answer
    x = 73,371.98

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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.