Home / 91,091.42-136,633.25-31,125.28

Finding the Fourth Proportional to 91,091.42, 136,633.25 and 31,125.28

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Solution

The fourth proportional to 91,091.42, 136,633.25 and 31,125.28 is: 46,686.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,091.42 : 136,633.25 = 31,125.28 : x
  2. Step 2: Convert to fraction form
    91,091.42/136,633.25 = 31,125.28/x
  3. Step 3: Cross multiply
    91,091.42x = 136,633.25 × 31,125.28
  4. Step 4: Simplify right side
    91,091.42x = 4,252,747,666.35
  5. Step 5: Solve for x
    x = 4,252,747,666.35/91,091.42
  6. Step 6: Final answer
    x = 46,686.59

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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.