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Finding the Fourth Proportional to 57,655.20, 86,482.80 and 18,216.30

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Solution

The fourth proportional to 57,655.20, 86,482.80 and 18,216.30 is: 27,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,655.20 : 86,482.80 = 18,216.30 : x
  2. Step 2: Convert to fraction form
    57,655.20/86,482.80 = 18,216.30/x
  3. Step 3: Cross multiply
    57,655.20x = 86,482.80 × 18,216.30
  4. Step 4: Simplify right side
    57,655.20x = 1,575,396,629.64
  5. Step 5: Solve for x
    x = 1,575,396,629.64/57,655.20
  6. Step 6: Final answer
    x = 27,324.45

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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.