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Finding the Fourth Proportional to 71,196, 98,246.64 and 39,363.04

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Solution

The fourth proportional to 71,196, 98,246.64 and 39,363.04 is: 54,318.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,196 : 98,246.64 = 39,363.04 : x
  2. Step 2: Convert to fraction form
    71,196/98,246.64 = 39,363.04/x
  3. Step 3: Cross multiply
    71,196x = 98,246.64 × 39,363.04
  4. Step 4: Simplify right side
    71,196x = 3,867,286,420.19
  5. Step 5: Solve for x
    x = 3,867,286,420.19/71,196
  6. Step 6: Final answer
    x = 54,318.87

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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.