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Finding the Fourth Proportional to 61,899.30, 92,843.55 and 20,346.30

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Solution

The fourth proportional to 61,899.30, 92,843.55 and 20,346.30 is: 30,517.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,899.30 : 92,843.55 = 20,346.30 : x
  2. Step 2: Convert to fraction form
    61,899.30/92,843.55 = 20,346.30/x
  3. Step 3: Cross multiply
    61,899.30x = 92,843.55 × 20,346.30
  4. Step 4: Simplify right side
    61,899.30x = 1,889,022,721.37
  5. Step 5: Solve for x
    x = 1,889,022,721.37/61,899.30
  6. Step 6: Final answer
    x = 30,517.68

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1.5x scale

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.