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Finding the Fourth Proportional to 62,078, 85,670.34 and 35,220.56

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Solution

The fourth proportional to 62,078, 85,670.34 and 35,220.56 is: 48,605.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,078 : 85,670.34 = 35,220.56 : x
  2. Step 2: Convert to fraction form
    62,078/85,670.34 = 35,220.56/x
  3. Step 3: Cross multiply
    62,078x = 85,670.34 × 35,220.56
  4. Step 4: Simplify right side
    62,078x = 3,017,357,350.19
  5. Step 5: Solve for x
    x = 3,017,357,350.19/62,078
  6. Step 6: Final answer
    x = 48,605.90

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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.