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Finding the Fourth Proportional to 60,672.40, 90,992.40 and 21,225.40

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Solution

The fourth proportional to 60,672.40, 90,992.40 and 21,225.40 is: 31,832.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,672.40 : 90,992.40 = 21,225.40 : x
  2. Step 2: Convert to fraction form
    60,672.40/90,992.40 = 21,225.40/x
  3. Step 3: Cross multiply
    60,672.40x = 90,992.40 × 21,225.40
  4. Step 4: Simplify right side
    60,672.40x = 1,931,350,086.96
  5. Step 5: Solve for x
    x = 1,931,350,086.96/60,672.40
  6. Step 6: Final answer
    x = 31,832.43

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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.