Home / 85,932.26-128,898.40-26,772.70

Finding the Fourth Proportional to 85,932.26, 128,898.40 and 26,772.70

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Solution

The fourth proportional to 85,932.26, 128,898.40 and 26,772.70 is: 40,159.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,932.26 : 128,898.40 = 26,772.70 : x
  2. Step 2: Convert to fraction form
    85,932.26/128,898.40 = 26,772.70/x
  3. Step 3: Cross multiply
    85,932.26x = 128,898.40 × 26,772.70
  4. Step 4: Simplify right side
    85,932.26x = 3,450,958,193.68
  5. Step 5: Solve for x
    x = 3,450,958,193.68/85,932.26
  6. Step 6: Final answer
    x = 40,159.05

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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.