Home / 85,186.49-127,780.20-35,239.53

Finding the Fourth Proportional to 85,186.49, 127,780.20 and 35,239.53

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Solution

The fourth proportional to 85,186.49, 127,780.20 and 35,239.53 is: 52,859.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,186.49 : 127,780.20 = 35,239.53 : x
  2. Step 2: Convert to fraction form
    85,186.49/127,780.20 = 35,239.53/x
  3. Step 3: Cross multiply
    85,186.49x = 127,780.20 × 35,239.53
  4. Step 4: Simplify right side
    85,186.49x = 4,502,914,191.31
  5. Step 5: Solve for x
    x = 4,502,914,191.31/85,186.49
  6. Step 6: Final answer
    x = 52,859.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.