Home / 90,976.36-136,438.62-57,646.12

Finding the Fourth Proportional to 90,976.36, 136,438.62 and 57,646.12

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Solution

The fourth proportional to 90,976.36, 136,438.62 and 57,646.12 is: 86,452.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,976.36 : 136,438.62 = 57,646.12 : x
  2. Step 2: Convert to fraction form
    90,976.36/136,438.62 = 57,646.12/x
  3. Step 3: Cross multiply
    90,976.36x = 136,438.62 × 57,646.12
  4. Step 4: Simplify right side
    90,976.36x = 7,865,157,061.15
  5. Step 5: Solve for x
    x = 7,865,157,061.15/90,976.36
  6. Step 6: Final answer
    x = 86,452.76

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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.