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Finding the Fourth Proportional to 68,989.20, 103,483.80 and 24,617.40

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Solution

The fourth proportional to 68,989.20, 103,483.80 and 24,617.40 is: 36,926.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,989.20 : 103,483.80 = 24,617.40 : x
  2. Step 2: Convert to fraction form
    68,989.20/103,483.80 = 24,617.40/x
  3. Step 3: Cross multiply
    68,989.20x = 103,483.80 × 24,617.40
  4. Step 4: Simplify right side
    68,989.20x = 2,547,502,098.12
  5. Step 5: Solve for x
    x = 2,547,502,098.12/68,989.20
  6. Step 6: Final answer
    x = 36,926.10

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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.