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Finding the Fourth Proportional to 62,120.60, 85,704.57 and 40,622.93

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Solution

The fourth proportional to 62,120.60, 85,704.57 and 40,622.93 is: 56,045.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,120.60 : 85,704.57 = 40,622.93 : x
  2. Step 2: Convert to fraction form
    62,120.60/85,704.57 = 40,622.93/x
  3. Step 3: Cross multiply
    62,120.60x = 85,704.57 × 40,622.93
  4. Step 4: Simplify right side
    62,120.60x = 3,481,570,747.79
  5. Step 5: Solve for x
    x = 3,481,570,747.79/62,120.60
  6. Step 6: Final answer
    x = 56,045.35

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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.