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Finding the Fourth Proportional to 73,412.80, 110,234.40 and 42,308.80

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Solution

The fourth proportional to 73,412.80, 110,234.40 and 42,308.80 is: 63,529.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,412.80 : 110,234.40 = 42,308.80 : x
  2. Step 2: Convert to fraction form
    73,412.80/110,234.40 = 42,308.80/x
  3. Step 3: Cross multiply
    73,412.80x = 110,234.40 × 42,308.80
  4. Step 4: Simplify right side
    73,412.80x = 4,663,885,182.72
  5. Step 5: Solve for x
    x = 4,663,885,182.72/73,412.80
  6. Step 6: Final answer
    x = 63,529.59

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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.