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Finding the Fourth Proportional to 67,803.11, 101,707.10 and 28,305.89

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Solution

The fourth proportional to 67,803.11, 101,707.10 and 28,305.89 is: 42,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,803.11 : 101,707.10 = 28,305.89 : x
  2. Step 2: Convert to fraction form
    67,803.11/101,707.10 = 28,305.89/x
  3. Step 3: Cross multiply
    67,803.11x = 101,707.10 × 28,305.89
  4. Step 4: Simplify right side
    67,803.11x = 2,878,909,843.29
  5. Step 5: Solve for x
    x = 2,878,909,843.29/67,803.11
  6. Step 6: Final answer
    x = 42,459.85

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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.