Home / 103,712.20-155,645.10-41,427.40

Finding the Fourth Proportional to 103,712.20, 155,645.10 and 41,427.40

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Solution

The fourth proportional to 103,712.20, 155,645.10 and 41,427.40 is: 62,171.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,712.20 : 155,645.10 = 41,427.40 : x
  2. Step 2: Convert to fraction form
    103,712.20/155,645.10 = 41,427.40/x
  3. Step 3: Cross multiply
    103,712.20x = 155,645.10 × 41,427.40
  4. Step 4: Simplify right side
    103,712.20x = 6,447,971,815.74
  5. Step 5: Solve for x
    x = 6,447,971,815.74/103,712.20
  6. Step 6: Final answer
    x = 62,171.78

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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.