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Finding the Fourth Proportional to 39,670.99, 59,503.62 and 18,615.82

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Solution

The fourth proportional to 39,670.99, 59,503.62 and 18,615.82 is: 27,922.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,670.99 : 59,503.62 = 18,615.82 : x
  2. Step 2: Convert to fraction form
    39,670.99/59,503.62 = 18,615.82/x
  3. Step 3: Cross multiply
    39,670.99x = 59,503.62 × 18,615.82
  4. Step 4: Simplify right side
    39,670.99x = 1,107,708,679.27
  5. Step 5: Solve for x
    x = 1,107,708,679.27/39,670.99
  6. Step 6: Final answer
    x = 27,922.39

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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.