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Finding the Fourth Proportional to 73,810.40, 110,731.80 and 36,388.40

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Solution

The fourth proportional to 73,810.40, 110,731.80 and 36,388.40 is: 54,590.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,810.40 : 110,731.80 = 36,388.40 : x
  2. Step 2: Convert to fraction form
    73,810.40/110,731.80 = 36,388.40/x
  3. Step 3: Cross multiply
    73,810.40x = 110,731.80 × 36,388.40
  4. Step 4: Simplify right side
    73,810.40x = 4,029,353,031.12
  5. Step 5: Solve for x
    x = 4,029,353,031.12/73,810.40
  6. Step 6: Final answer
    x = 54,590.59

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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.