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Finding the Fourth Proportional to 68,877.40, 103,316.10 and 60,129.40

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Solution

The fourth proportional to 68,877.40, 103,316.10 and 60,129.40 is: 90,194.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,877.40 : 103,316.10 = 60,129.40 : x
  2. Step 2: Convert to fraction form
    68,877.40/103,316.10 = 60,129.40/x
  3. Step 3: Cross multiply
    68,877.40x = 103,316.10 × 60,129.40
  4. Step 4: Simplify right side
    68,877.40x = 6,212,335,103.34
  5. Step 5: Solve for x
    x = 6,212,335,103.34/68,877.40
  6. Step 6: Final answer
    x = 90,194.10

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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.