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Finding the Fourth Proportional to 66,371.40, 99,523.08 and 21,993.12

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Solution

The fourth proportional to 66,371.40, 99,523.08 and 21,993.12 is: 32,978.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,371.40 : 99,523.08 = 21,993.12 : x
  2. Step 2: Convert to fraction form
    66,371.40/99,523.08 = 21,993.12/x
  3. Step 3: Cross multiply
    66,371.40x = 99,523.08 × 21,993.12
  4. Step 4: Simplify right side
    66,371.40x = 2,188,823,041.21
  5. Step 5: Solve for x
    x = 2,188,823,041.21/66,371.40
  6. Step 6: Final answer
    x = 32,978.41

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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.