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Finding the Fourth Proportional to 67,885.82, 101,829.48 and 20,501.32

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Solution

The fourth proportional to 67,885.82, 101,829.48 and 20,501.32 is: 30,752.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,885.82 : 101,829.48 = 20,501.32 : x
  2. Step 2: Convert to fraction form
    67,885.82/101,829.48 = 20,501.32/x
  3. Step 3: Cross multiply
    67,885.82x = 101,829.48 × 20,501.32
  4. Step 4: Simplify right side
    67,885.82x = 2,087,638,754.91
  5. Step 5: Solve for x
    x = 2,087,638,754.91/67,885.82
  6. Step 6: Final answer
    x = 30,752.21

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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.