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Finding the Fourth Proportional to 61,783.32, 85,260.90 and 33,489

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Solution

The fourth proportional to 61,783.32, 85,260.90 and 33,489 is: 46,214.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,783.32 : 85,260.90 = 33,489 : x
  2. Step 2: Convert to fraction form
    61,783.32/85,260.90 = 33,489/x
  3. Step 3: Cross multiply
    61,783.32x = 85,260.90 × 33,489
  4. Step 4: Simplify right side
    61,783.32x = 2,855,302,280.10
  5. Step 5: Solve for x
    x = 2,855,302,280.10/61,783.32
  6. Step 6: Final answer
    x = 46,214.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.