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Finding the Fourth Proportional to 85,374.96, 128,081.48 and 26,216.61

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Solution

The fourth proportional to 85,374.96, 128,081.48 and 26,216.61 is: 39,330.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,374.96 : 128,081.48 = 26,216.61 : x
  2. Step 2: Convert to fraction form
    85,374.96/128,081.48 = 26,216.61/x
  3. Step 3: Cross multiply
    85,374.96x = 128,081.48 × 26,216.61
  4. Step 4: Simplify right side
    85,374.96x = 3,357,862,078.30
  5. Step 5: Solve for x
    x = 3,357,862,078.30/85,374.96
  6. Step 6: Final answer
    x = 39,330.76

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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.