Home / 86,040.35-129,060.53-68,325.65

Finding the Fourth Proportional to 86,040.35, 129,060.53 and 68,325.65

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Solution

The fourth proportional to 86,040.35, 129,060.53 and 68,325.65 is: 102,488.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,040.35 : 129,060.53 = 68,325.65 : x
  2. Step 2: Convert to fraction form
    86,040.35/129,060.53 = 68,325.65/x
  3. Step 3: Cross multiply
    86,040.35x = 129,060.53 × 68,325.65
  4. Step 4: Simplify right side
    86,040.35x = 8,818,144,259.97
  5. Step 5: Solve for x
    x = 8,818,144,259.97/86,040.35
  6. Step 6: Final answer
    x = 102,488.48

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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.