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Finding the Fourth Proportional to 60,310.34, 90,401.64 and 20,291.22

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Solution

The fourth proportional to 60,310.34, 90,401.64 and 20,291.22 is: 30,415.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,310.34 : 90,401.64 = 20,291.22 : x
  2. Step 2: Convert to fraction form
    60,310.34/90,401.64 = 20,291.22/x
  3. Step 3: Cross multiply
    60,310.34x = 90,401.64 × 20,291.22
  4. Step 4: Simplify right side
    60,310.34x = 1,834,359,565.60
  5. Step 5: Solve for x
    x = 1,834,359,565.60/60,310.34
  6. Step 6: Final answer
    x = 30,415.34

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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.