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Finding the Fourth Proportional to 60,565.48, 90,860.37 and 21,112

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Solution

The fourth proportional to 60,565.48, 90,860.37 and 21,112 is: 31,672.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,565.48 : 90,860.37 = 21,112 : x
  2. Step 2: Convert to fraction form
    60,565.48/90,860.37 = 21,112/x
  3. Step 3: Cross multiply
    60,565.48x = 90,860.37 × 21,112
  4. Step 4: Simplify right side
    60,565.48x = 1,918,244,131.44
  5. Step 5: Solve for x
    x = 1,918,244,131.44/60,565.48
  6. Step 6: Final answer
    x = 31,672.24

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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.