Home / 90,868.06-136,308.21-30,902.59

Finding the Fourth Proportional to 90,868.06, 136,308.21 and 30,902.59

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Solution

The fourth proportional to 90,868.06, 136,308.21 and 30,902.59 is: 46,355.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,868.06 : 136,308.21 = 30,902.59 : x
  2. Step 2: Convert to fraction form
    90,868.06/136,308.21 = 30,902.59/x
  3. Step 3: Cross multiply
    90,868.06x = 136,308.21 × 30,902.59
  4. Step 4: Simplify right side
    90,868.06x = 4,212,276,727.26
  5. Step 5: Solve for x
    x = 4,212,276,727.26/90,868.06
  6. Step 6: Final answer
    x = 46,355.97

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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.