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Finding the Fourth Proportional to 60,393.12, 90,567 and 20,940.72

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Solution

The fourth proportional to 60,393.12, 90,567 and 20,940.72 is: 31,403.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,393.12 : 90,567 = 20,940.72 : x
  2. Step 2: Convert to fraction form
    60,393.12/90,567 = 20,940.72/x
  3. Step 3: Cross multiply
    60,393.12x = 90,567 × 20,940.72
  4. Step 4: Simplify right side
    60,393.12x = 1,896,538,188.24
  5. Step 5: Solve for x
    x = 1,896,538,188.24/60,393.12
  6. Step 6: Final answer
    x = 31,403.22

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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.