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Finding the Fourth Proportional to 45,118, 62,291.08 and 28,991.84

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Solution

The fourth proportional to 45,118, 62,291.08 and 28,991.84 is: 40,026.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,118 : 62,291.08 = 28,991.84 : x
  2. Step 2: Convert to fraction form
    45,118/62,291.08 = 28,991.84/x
  3. Step 3: Cross multiply
    45,118x = 62,291.08 × 28,991.84
  4. Step 4: Simplify right side
    45,118x = 1,805,933,024.79
  5. Step 5: Solve for x
    x = 1,805,933,024.79/45,118
  6. Step 6: Final answer
    x = 40,026.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.