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Finding the Fourth Proportional to 74,422.32, 102,704.40 and 45,758.40

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Solution

The fourth proportional to 74,422.32, 102,704.40 and 45,758.40 is: 63,147.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,422.32 : 102,704.40 = 45,758.40 : x
  2. Step 2: Convert to fraction form
    74,422.32/102,704.40 = 45,758.40/x
  3. Step 3: Cross multiply
    74,422.32x = 102,704.40 × 45,758.40
  4. Step 4: Simplify right side
    74,422.32x = 4,699,589,016.96
  5. Step 5: Solve for x
    x = 4,699,589,016.96/74,422.32
  6. Step 6: Final answer
    x = 63,147.57

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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.