Home / 75,870.20-113,805.30-19,705.70

Finding the Fourth Proportional to 75,870.20, 113,805.30 and 19,705.70

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Solution

The fourth proportional to 75,870.20, 113,805.30 and 19,705.70 is: 29,558.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,870.20 : 113,805.30 = 19,705.70 : x
  2. Step 2: Convert to fraction form
    75,870.20/113,805.30 = 19,705.70/x
  3. Step 3: Cross multiply
    75,870.20x = 113,805.30 × 19,705.70
  4. Step 4: Simplify right side
    75,870.20x = 2,242,613,100.21
  5. Step 5: Solve for x
    x = 2,242,613,100.21/75,870.20
  6. Step 6: Final answer
    x = 29,558.55

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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.