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Finding the Fourth Proportional to 69,206.60, 103,809.91 and 39,603.50

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Solution

The fourth proportional to 69,206.60, 103,809.91 and 39,603.50 is: 59,405.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,206.60 : 103,809.91 = 39,603.50 : x
  2. Step 2: Convert to fraction form
    69,206.60/103,809.91 = 39,603.50/x
  3. Step 3: Cross multiply
    69,206.60x = 103,809.91 × 39,603.50
  4. Step 4: Simplify right side
    69,206.60x = 4,111,235,572.67
  5. Step 5: Solve for x
    x = 4,111,235,572.67/69,206.60
  6. Step 6: Final answer
    x = 59,405.26

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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.