Home / 86,412.20-129,618.30-51,333.80

Finding the Fourth Proportional to 86,412.20, 129,618.30 and 51,333.80

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Solution

The fourth proportional to 86,412.20, 129,618.30 and 51,333.80 is: 77,000.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,412.20 : 129,618.30 = 51,333.80 : x
  2. Step 2: Convert to fraction form
    86,412.20/129,618.30 = 51,333.80/x
  3. Step 3: Cross multiply
    86,412.20x = 129,618.30 × 51,333.80
  4. Step 4: Simplify right side
    86,412.20x = 6,653,799,888.54
  5. Step 5: Solve for x
    x = 6,653,799,888.54/86,412.20
  6. Step 6: Final answer
    x = 77,000.70

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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.