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Finding the Fourth Proportional to 60,873.36, 91,301.54 and 20,891.72

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Solution

The fourth proportional to 60,873.36, 91,301.54 and 20,891.72 is: 31,334.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,873.36 : 91,301.54 = 20,891.72 : x
  2. Step 2: Convert to fraction form
    60,873.36/91,301.54 = 20,891.72/x
  3. Step 3: Cross multiply
    60,873.36x = 91,301.54 × 20,891.72
  4. Step 4: Simplify right side
    60,873.36x = 1,907,445,648.28
  5. Step 5: Solve for x
    x = 1,907,445,648.28/60,873.36
  6. Step 6: Final answer
    x = 31,334.65

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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.