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Finding the Fourth Proportional to 68,118, 94,008.60 and 38,315.76

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Solution

The fourth proportional to 68,118, 94,008.60 and 38,315.76 is: 52,878.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,118 : 94,008.60 = 38,315.76 : x
  2. Step 2: Convert to fraction form
    68,118/94,008.60 = 38,315.76/x
  3. Step 3: Cross multiply
    68,118x = 94,008.60 × 38,315.76
  4. Step 4: Simplify right side
    68,118x = 3,602,010,955.54
  5. Step 5: Solve for x
    x = 3,602,010,955.54/68,118
  6. Step 6: Final answer
    x = 52,878.99

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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.