Home / 91,122.22-136,684.23-31,959.31

Finding the Fourth Proportional to 91,122.22, 136,684.23 and 31,959.31

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Solution

The fourth proportional to 91,122.22, 136,684.23 and 31,959.31 is: 47,939.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,122.22 : 136,684.23 = 31,959.31 : x
  2. Step 2: Convert to fraction form
    91,122.22/136,684.23 = 31,959.31/x
  3. Step 3: Cross multiply
    91,122.22x = 136,684.23 × 31,959.31
  4. Step 4: Simplify right side
    91,122.22x = 4,368,333,678.68
  5. Step 5: Solve for x
    x = 4,368,333,678.68/91,122.22
  6. Step 6: Final answer
    x = 47,939.28

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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.