Home / 74,948.88-112,420.62-18,789.45

Finding the Fourth Proportional to 74,948.88, 112,420.62 and 18,789.45

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Solution

The fourth proportional to 74,948.88, 112,420.62 and 18,789.45 is: 28,183.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,948.88 : 112,420.62 = 18,789.45 : x
  2. Step 2: Convert to fraction form
    74,948.88/112,420.62 = 18,789.45/x
  3. Step 3: Cross multiply
    74,948.88x = 112,420.62 × 18,789.45
  4. Step 4: Simplify right side
    74,948.88x = 2,112,321,618.46
  5. Step 5: Solve for x
    x = 2,112,321,618.46/74,948.88
  6. Step 6: Final answer
    x = 28,183.50

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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.