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Finding the Fourth Proportional to 85,374.59, 128,080.92 and 26,216.24

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Solution

The fourth proportional to 85,374.59, 128,080.92 and 26,216.24 is: 39,330.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,374.59 : 128,080.92 = 26,216.24 : x
  2. Step 2: Convert to fraction form
    85,374.59/128,080.92 = 26,216.24/x
  3. Step 3: Cross multiply
    85,374.59x = 128,080.92 × 26,216.24
  4. Step 4: Simplify right side
    85,374.59x = 3,357,800,138.14
  5. Step 5: Solve for x
    x = 3,357,800,138.14/85,374.59
  6. Step 6: Final answer
    x = 39,330.21

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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.