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Finding the Fourth Proportional to 71,409.79, 106,476.25 and 69,448.03

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Solution

The fourth proportional to 71,409.79, 106,476.25 and 69,448.03 is: 103,551.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,409.79 : 106,476.25 = 69,448.03 : x
  2. Step 2: Convert to fraction form
    71,409.79/106,476.25 = 69,448.03/x
  3. Step 3: Cross multiply
    71,409.79x = 106,476.25 × 69,448.03
  4. Step 4: Simplify right side
    71,409.79x = 7,394,565,804.29
  5. Step 5: Solve for x
    x = 7,394,565,804.29/71,409.79
  6. Step 6: Final answer
    x = 103,551.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.