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Finding the Fourth Proportional to 77,883.01, 117,035.58 and 42,370.57

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Solution

The fourth proportional to 77,883.01, 117,035.58 and 42,370.57 is: 63,670.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,883.01 : 117,035.58 = 42,370.57 : x
  2. Step 2: Convert to fraction form
    77,883.01/117,035.58 = 42,370.57/x
  3. Step 3: Cross multiply
    77,883.01x = 117,035.58 × 42,370.57
  4. Step 4: Simplify right side
    77,883.01x = 4,958,864,234.88
  5. Step 5: Solve for x
    x = 4,958,864,234.88/77,883.01
  6. Step 6: Final answer
    x = 63,670.68

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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.