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Finding the Fourth Proportional to 68,613.86, 94,688.82 and 38,398.94

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Solution

The fourth proportional to 68,613.86, 94,688.82 and 38,398.94 is: 52,991.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,613.86 : 94,688.82 = 38,398.94 : x
  2. Step 2: Convert to fraction form
    68,613.86/94,688.82 = 38,398.94/x
  3. Step 3: Cross multiply
    68,613.86x = 94,688.82 × 38,398.94
  4. Step 4: Simplify right side
    68,613.86x = 3,635,950,317.85
  5. Step 5: Solve for x
    x = 3,635,950,317.85/68,613.86
  6. Step 6: Final answer
    x = 52,991.48

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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.