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Finding the Fourth Proportional to 65,115.70, 97,673.55 and 61,179.10

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Solution

The fourth proportional to 65,115.70, 97,673.55 and 61,179.10 is: 91,768.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,115.70 : 97,673.55 = 61,179.10 : x
  2. Step 2: Convert to fraction form
    65,115.70/97,673.55 = 61,179.10/x
  3. Step 3: Cross multiply
    65,115.70x = 97,673.55 × 61,179.10
  4. Step 4: Simplify right side
    65,115.70x = 5,975,579,882.81
  5. Step 5: Solve for x
    x = 5,975,579,882.81/65,115.70
  6. Step 6: Final answer
    x = 91,768.65

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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.