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Finding the Fourth Proportional to 68,141.86, 94,031.08 and 42,647.15

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Solution

The fourth proportional to 68,141.86, 94,031.08 and 42,647.15 is: 58,850.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,141.86 : 94,031.08 = 42,647.15 : x
  2. Step 2: Convert to fraction form
    68,141.86/94,031.08 = 42,647.15/x
  3. Step 3: Cross multiply
    68,141.86x = 94,031.08 × 42,647.15
  4. Step 4: Simplify right side
    68,141.86x = 4,010,157,701.88
  5. Step 5: Solve for x
    x = 4,010,157,701.88/68,141.86
  6. Step 6: Final answer
    x = 58,850.14

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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.