Home / 86,360.72-129,574.28-30,206.66

Finding the Fourth Proportional to 86,360.72, 129,574.28 and 30,206.66

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Solution

The fourth proportional to 86,360.72, 129,574.28 and 30,206.66 is: 45,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,360.72 : 129,574.28 = 30,206.66 : x
  2. Step 2: Convert to fraction form
    86,360.72/129,574.28 = 30,206.66/x
  3. Step 3: Cross multiply
    86,360.72x = 129,574.28 × 30,206.66
  4. Step 4: Simplify right side
    86,360.72x = 3,914,005,648.35
  5. Step 5: Solve for x
    x = 3,914,005,648.35/86,360.72
  6. Step 6: Final answer
    x = 45,321.60

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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.