Home / 86,584.40-129,844.20-30,402.80

Finding the Fourth Proportional to 86,584.40, 129,844.20 and 30,402.80

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Solution

The fourth proportional to 86,584.40, 129,844.20 and 30,402.80 is: 45,592.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,584.40 : 129,844.20 = 30,402.80 : x
  2. Step 2: Convert to fraction form
    86,584.40/129,844.20 = 30,402.80/x
  3. Step 3: Cross multiply
    86,584.40x = 129,844.20 × 30,402.80
  4. Step 4: Simplify right side
    86,584.40x = 3,947,627,243.76
  5. Step 5: Solve for x
    x = 3,947,627,243.76/86,584.40
  6. Step 6: Final answer
    x = 45,592.82

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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.