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Finding the Fourth Proportional to 61,636, 92,469.36 and 17,860

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Solution

The fourth proportional to 61,636, 92,469.36 and 17,860 is: 26,794.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,636 : 92,469.36 = 17,860 : x
  2. Step 2: Convert to fraction form
    61,636/92,469.36 = 17,860/x
  3. Step 3: Cross multiply
    61,636x = 92,469.36 × 17,860
  4. Step 4: Simplify right side
    61,636x = 1,651,502,769.60
  5. Step 5: Solve for x
    x = 1,651,502,769.60/61,636
  6. Step 6: Final answer
    x = 26,794.45

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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.