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Finding the Fourth Proportional to 70,418.42, 105,081.66 and 62,940.50

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Solution

The fourth proportional to 70,418.42, 105,081.66 and 62,940.50 is: 93,922.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,418.42 : 105,081.66 = 62,940.50 : x
  2. Step 2: Convert to fraction form
    70,418.42/105,081.66 = 62,940.50/x
  3. Step 3: Cross multiply
    70,418.42x = 105,081.66 × 62,940.50
  4. Step 4: Simplify right side
    70,418.42x = 6,613,892,221.23
  5. Step 5: Solve for x
    x = 6,613,892,221.23/70,418.42
  6. Step 6: Final answer
    x = 93,922.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.