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Finding the Fourth Proportional to 84,299.80, 116,337.12 and 48,489.78

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Solution

The fourth proportional to 84,299.80, 116,337.12 and 48,489.78 is: 66,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,299.80 : 116,337.12 = 48,489.78 : x
  2. Step 2: Convert to fraction form
    84,299.80/116,337.12 = 48,489.78/x
  3. Step 3: Cross multiply
    84,299.80x = 116,337.12 × 48,489.78
  4. Step 4: Simplify right side
    84,299.80x = 5,641,161,354.63
  5. Step 5: Solve for x
    x = 5,641,161,354.63/84,299.80
  6. Step 6: Final answer
    x = 66,917.85

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1.5x scale

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.