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Finding the Fourth Proportional to 67,347.40, 100,977.90 and 27,920.20

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Solution

The fourth proportional to 67,347.40, 100,977.90 and 27,920.20 is: 41,862.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,347.40 : 100,977.90 = 27,920.20 : x
  2. Step 2: Convert to fraction form
    67,347.40/100,977.90 = 27,920.20/x
  3. Step 3: Cross multiply
    67,347.40x = 100,977.90 × 27,920.20
  4. Step 4: Simplify right side
    67,347.40x = 2,819,323,163.58
  5. Step 5: Solve for x
    x = 2,819,323,163.58/67,347.40
  6. Step 6: Final answer
    x = 41,862.39

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1.5x scale

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.