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Finding the Fourth Proportional to 62,990, 86,924.88 and 34,695.92

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Solution

The fourth proportional to 62,990, 86,924.88 and 34,695.92 is: 47,879.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,990 : 86,924.88 = 34,695.92 : x
  2. Step 2: Convert to fraction form
    62,990/86,924.88 = 34,695.92/x
  3. Step 3: Cross multiply
    62,990x = 86,924.88 × 34,695.92
  4. Step 4: Simplify right side
    62,990x = 3,015,938,682.49
  5. Step 5: Solve for x
    x = 3,015,938,682.49/62,990
  6. Step 6: Final answer
    x = 47,879.64

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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.