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Finding the Fourth Proportional to 67,387.77, 101,101.10 and 20,647.53

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Solution

The fourth proportional to 67,387.77, 101,101.10 and 20,647.53 is: 30,977.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,387.77 : 101,101.10 = 20,647.53 : x
  2. Step 2: Convert to fraction form
    67,387.77/101,101.10 = 20,647.53/x
  3. Step 3: Cross multiply
    67,387.77x = 101,101.10 × 20,647.53
  4. Step 4: Simplify right side
    67,387.77x = 2,087,487,892.05
  5. Step 5: Solve for x
    x = 2,087,487,892.05/67,387.77
  6. Step 6: Final answer
    x = 30,977.25

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1.5x scale

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.