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Finding the Fourth Proportional to 69,385.58, 103,985.13 and 36,036.26

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Solution

The fourth proportional to 69,385.58, 103,985.13 and 36,036.26 is: 54,005.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,385.58 : 103,985.13 = 36,036.26 : x
  2. Step 2: Convert to fraction form
    69,385.58/103,985.13 = 36,036.26/x
  3. Step 3: Cross multiply
    69,385.58x = 103,985.13 × 36,036.26
  4. Step 4: Simplify right side
    69,385.58x = 3,747,235,180.81
  5. Step 5: Solve for x
    x = 3,747,235,180.81/69,385.58
  6. Step 6: Final answer
    x = 54,005.96

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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.