Home / 83,645.89-125,449.70-49,921.45

Finding the Fourth Proportional to 83,645.89, 125,449.70 and 49,921.45

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Solution

The fourth proportional to 83,645.89, 125,449.70 and 49,921.45 is: 74,870.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,645.89 : 125,449.70 = 49,921.45 : x
  2. Step 2: Convert to fraction form
    83,645.89/125,449.70 = 49,921.45/x
  3. Step 3: Cross multiply
    83,645.89x = 125,449.70 × 49,921.45
  4. Step 4: Simplify right side
    83,645.89x = 6,262,630,362.83
  5. Step 5: Solve for x
    x = 6,262,630,362.83/83,645.89
  6. Step 6: Final answer
    x = 74,870.75

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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.