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Finding the Fourth Proportional to 73,603.20, 110,404.80 and 42,499.20

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Solution

The fourth proportional to 73,603.20, 110,404.80 and 42,499.20 is: 63,748.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,603.20 : 110,404.80 = 42,499.20 : x
  2. Step 2: Convert to fraction form
    73,603.20/110,404.80 = 42,499.20/x
  3. Step 3: Cross multiply
    73,603.20x = 110,404.80 × 42,499.20
  4. Step 4: Simplify right side
    73,603.20x = 4,692,115,676.16
  5. Step 5: Solve for x
    x = 4,692,115,676.16/73,603.20
  6. Step 6: Final answer
    x = 63,748.80

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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.