Home / 85,121.79-117,463.54-48,821.35

Finding the Fourth Proportional to 85,121.79, 117,463.54 and 48,821.35

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Solution

The fourth proportional to 85,121.79, 117,463.54 and 48,821.35 is: 67,370.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,121.79 : 117,463.54 = 48,821.35 : x
  2. Step 2: Convert to fraction form
    85,121.79/117,463.54 = 48,821.35/x
  3. Step 3: Cross multiply
    85,121.79x = 117,463.54 × 48,821.35
  4. Step 4: Simplify right side
    85,121.79x = 5,734,728,598.58
  5. Step 5: Solve for x
    x = 5,734,728,598.58/85,121.79
  6. Step 6: Final answer
    x = 67,370.86

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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.