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Finding the Fourth Proportional to 67,503.76, 101,266.57 and 20,756.63

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Solution

The fourth proportional to 67,503.76, 101,266.57 and 20,756.63 is: 31,138.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,503.76 : 101,266.57 = 20,756.63 : x
  2. Step 2: Convert to fraction form
    67,503.76/101,266.57 = 20,756.63/x
  3. Step 3: Cross multiply
    67,503.76x = 101,266.57 × 20,756.63
  4. Step 4: Simplify right side
    67,503.76x = 2,101,952,724.86
  5. Step 5: Solve for x
    x = 2,101,952,724.86/67,503.76
  6. Step 6: Final answer
    x = 31,138.31

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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.