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Finding the Fourth Proportional to 66,568.98, 91,877.06 and 39,343.96

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Solution

The fourth proportional to 66,568.98, 91,877.06 and 39,343.96 is: 54,301.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,568.98 : 91,877.06 = 39,343.96 : x
  2. Step 2: Convert to fraction form
    66,568.98/91,877.06 = 39,343.96/x
  3. Step 3: Cross multiply
    66,568.98x = 91,877.06 × 39,343.96
  4. Step 4: Simplify right side
    66,568.98x = 3,614,807,242.22
  5. Step 5: Solve for x
    x = 3,614,807,242.22/66,568.98
  6. Step 6: Final answer
    x = 54,301.68

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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.