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Finding the Fourth Proportional to 73,878.40, 110,744.70 and 36,407.80

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Solution

The fourth proportional to 73,878.40, 110,744.70 and 36,407.80 is: 54,575.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,878.40 : 110,744.70 = 36,407.80 : x
  2. Step 2: Convert to fraction form
    73,878.40/110,744.70 = 36,407.80/x
  3. Step 3: Cross multiply
    73,878.40x = 110,744.70 × 36,407.80
  4. Step 4: Simplify right side
    73,878.40x = 4,031,970,888.66
  5. Step 5: Solve for x
    x = 4,031,970,888.66/73,878.40
  6. Step 6: Final answer
    x = 54,575.77

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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.