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Finding the Fourth Proportional to 66,728.72, 100,028.28 and 37,119.44

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Solution

The fourth proportional to 66,728.72, 100,028.28 and 37,119.44 is: 55,643.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,728.72 : 100,028.28 = 37,119.44 : x
  2. Step 2: Convert to fraction form
    66,728.72/100,028.28 = 37,119.44/x
  3. Step 3: Cross multiply
    66,728.72x = 100,028.28 × 37,119.44
  4. Step 4: Simplify right side
    66,728.72x = 3,712,993,737.76
  5. Step 5: Solve for x
    x = 3,712,993,737.76/66,728.72
  6. Step 6: Final answer
    x = 55,643.11

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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.