Home / 91,090.40-136,562.70-38,456.60

Finding the Fourth Proportional to 91,090.40, 136,562.70 and 38,456.60

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Solution

The fourth proportional to 91,090.40, 136,562.70 and 38,456.60 is: 57,654.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,090.40 : 136,562.70 = 38,456.60 : x
  2. Step 2: Convert to fraction form
    91,090.40/136,562.70 = 38,456.60/x
  3. Step 3: Cross multiply
    91,090.40x = 136,562.70 × 38,456.60
  4. Step 4: Simplify right side
    91,090.40x = 5,251,737,128.82
  5. Step 5: Solve for x
    x = 5,251,737,128.82/91,090.40
  6. Step 6: Final answer
    x = 57,654.12

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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.