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Finding the Fourth Proportional to 82,993.60, 124,490.40 and 20,664.10

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Solution

The fourth proportional to 82,993.60, 124,490.40 and 20,664.10 is: 30,996.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,993.60 : 124,490.40 = 20,664.10 : x
  2. Step 2: Convert to fraction form
    82,993.60/124,490.40 = 20,664.10/x
  3. Step 3: Cross multiply
    82,993.60x = 124,490.40 × 20,664.10
  4. Step 4: Simplify right side
    82,993.60x = 2,572,482,074.64
  5. Step 5: Solve for x
    x = 2,572,482,074.64/82,993.60
  6. Step 6: Final answer
    x = 30,996.15

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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.