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Finding the Fourth Proportional to 66,224.16, 91,402.32 and 37,948.80

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Solution

The fourth proportional to 66,224.16, 91,402.32 and 37,948.80 is: 52,376.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,224.16 : 91,402.32 = 37,948.80 : x
  2. Step 2: Convert to fraction form
    66,224.16/91,402.32 = 37,948.80/x
  3. Step 3: Cross multiply
    66,224.16x = 91,402.32 × 37,948.80
  4. Step 4: Simplify right side
    66,224.16x = 3,468,608,361.22
  5. Step 5: Solve for x
    x = 3,468,608,361.22/66,224.16
  6. Step 6: Final answer
    x = 52,376.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.