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Finding the Fourth Proportional to 62,699.49, 86,458.19 and 47,420.73

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Solution

The fourth proportional to 62,699.49, 86,458.19 and 47,420.73 is: 65,389.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,699.49 : 86,458.19 = 47,420.73 : x
  2. Step 2: Convert to fraction form
    62,699.49/86,458.19 = 47,420.73/x
  3. Step 3: Cross multiply
    62,699.49x = 86,458.19 × 47,420.73
  4. Step 4: Simplify right side
    62,699.49x = 4,099,910,247.18
  5. Step 5: Solve for x
    x = 4,099,910,247.18/62,699.49
  6. Step 6: Final answer
    x = 65,389.85

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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.