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Finding the Fourth Proportional to 68,387.63, 94,379.63 and 38,178.81

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Solution

The fourth proportional to 68,387.63, 94,379.63 and 38,178.81 is: 52,689.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,387.63 : 94,379.63 = 38,178.81 : x
  2. Step 2: Convert to fraction form
    68,387.63/94,379.63 = 38,178.81/x
  3. Step 3: Cross multiply
    68,387.63x = 94,379.63 × 38,178.81
  4. Step 4: Simplify right side
    68,387.63x = 3,603,301,770.75
  5. Step 5: Solve for x
    x = 3,603,301,770.75/68,387.63
  6. Step 6: Final answer
    x = 52,689.38

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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.