Home / 86,432.72-129,647.80-52,708.65

Finding the Fourth Proportional to 86,432.72, 129,647.80 and 52,708.65

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Solution

The fourth proportional to 86,432.72, 129,647.80 and 52,708.65 is: 79,062.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,432.72 : 129,647.80 = 52,708.65 : x
  2. Step 2: Convert to fraction form
    86,432.72/129,647.80 = 52,708.65/x
  3. Step 3: Cross multiply
    86,432.72x = 129,647.80 × 52,708.65
  4. Step 4: Simplify right side
    86,432.72x = 6,833,560,381.70
  5. Step 5: Solve for x
    x = 6,833,560,381.70/86,432.72
  6. Step 6: Final answer
    x = 79,062.19

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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.