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Finding the Fourth Proportional to 85,508.67, 128,265.61 and 29,347.98

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Solution

The fourth proportional to 85,508.67, 128,265.61 and 29,347.98 is: 44,022.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,508.67 : 128,265.61 = 29,347.98 : x
  2. Step 2: Convert to fraction form
    85,508.67/128,265.61 = 29,347.98/x
  3. Step 3: Cross multiply
    85,508.67x = 128,265.61 × 29,347.98
  4. Step 4: Simplify right side
    85,508.67x = 3,764,336,057.63
  5. Step 5: Solve for x
    x = 3,764,336,057.63/85,508.67
  6. Step 6: Final answer
    x = 44,022.86

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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.