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Finding the Fourth Proportional to 69,077.40, 103,616.10 and 63,828.60

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Solution

The fourth proportional to 69,077.40, 103,616.10 and 63,828.60 is: 95,742.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,077.40 : 103,616.10 = 63,828.60 : x
  2. Step 2: Convert to fraction form
    69,077.40/103,616.10 = 63,828.60/x
  3. Step 3: Cross multiply
    69,077.40x = 103,616.10 × 63,828.60
  4. Step 4: Simplify right side
    69,077.40x = 6,613,670,600.46
  5. Step 5: Solve for x
    x = 6,613,670,600.46/69,077.40
  6. Step 6: Final answer
    x = 95,742.90

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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.