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Finding the Fourth Proportional to 71,017.20, 106,525.80 and 26,645.40

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Solution

The fourth proportional to 71,017.20, 106,525.80 and 26,645.40 is: 39,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,017.20 : 106,525.80 = 26,645.40 : x
  2. Step 2: Convert to fraction form
    71,017.20/106,525.80 = 26,645.40/x
  3. Step 3: Cross multiply
    71,017.20x = 106,525.80 × 26,645.40
  4. Step 4: Simplify right side
    71,017.20x = 2,838,422,551.32
  5. Step 5: Solve for x
    x = 2,838,422,551.32/71,017.20
  6. Step 6: Final answer
    x = 39,968.10

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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.