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Finding the Fourth Proportional to 63,398.40, 94,942.08 and 42,558.72

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Solution

The fourth proportional to 63,398.40, 94,942.08 and 42,558.72 is: 63,733.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,398.40 : 94,942.08 = 42,558.72 : x
  2. Step 2: Convert to fraction form
    63,398.40/94,942.08 = 42,558.72/x
  3. Step 3: Cross multiply
    63,398.40x = 94,942.08 × 42,558.72
  4. Step 4: Simplify right side
    63,398.40x = 4,040,613,398.94
  5. Step 5: Solve for x
    x = 4,040,613,398.94/63,398.40
  6. Step 6: Final answer
    x = 63,733.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.