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Finding the Fourth Proportional to 45,103.77, 67,663.96 and 18,810.77

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Solution

The fourth proportional to 45,103.77, 67,663.96 and 18,810.77 is: 28,219.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,103.77 : 67,663.96 = 18,810.77 : x
  2. Step 2: Convert to fraction form
    45,103.77/67,663.96 = 18,810.77/x
  3. Step 3: Cross multiply
    45,103.77x = 67,663.96 × 18,810.77
  4. Step 4: Simplify right side
    45,103.77x = 1,272,810,803.50
  5. Step 5: Solve for x
    x = 1,272,810,803.50/45,103.77
  6. Step 6: Final answer
    x = 28,219.61

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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.