Home / 86,547.20-129,723.60-36,618.80

Finding the Fourth Proportional to 86,547.20, 129,723.60 and 36,618.80

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Solution

The fourth proportional to 86,547.20, 129,723.60 and 36,618.80 is: 54,887.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,547.20 : 129,723.60 = 36,618.80 : x
  2. Step 2: Convert to fraction form
    86,547.20/129,723.60 = 36,618.80/x
  3. Step 3: Cross multiply
    86,547.20x = 129,723.60 × 36,618.80
  4. Step 4: Simplify right side
    86,547.20x = 4,750,322,563.68
  5. Step 5: Solve for x
    x = 4,750,322,563.68/86,547.20
  6. Step 6: Final answer
    x = 54,887.07

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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.