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Finding the Fourth Proportional to 57,746.80, 86,620.20 and 20,349.10

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Solution

The fourth proportional to 57,746.80, 86,620.20 and 20,349.10 is: 30,523.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,746.80 : 86,620.20 = 20,349.10 : x
  2. Step 2: Convert to fraction form
    57,746.80/86,620.20 = 20,349.10/x
  3. Step 3: Cross multiply
    57,746.80x = 86,620.20 × 20,349.10
  4. Step 4: Simplify right side
    57,746.80x = 1,762,643,111.82
  5. Step 5: Solve for x
    x = 1,762,643,111.82/57,746.80
  6. Step 6: Final answer
    x = 30,523.65

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Similar ratio
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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.