Home / 91,985.73-138,017.48-39,419.97

Finding the Fourth Proportional to 91,985.73, 138,017.48 and 39,419.97

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Solution

The fourth proportional to 91,985.73, 138,017.48 and 39,419.97 is: 59,146.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,985.73 : 138,017.48 = 39,419.97 : x
  2. Step 2: Convert to fraction form
    91,985.73/138,017.48 = 39,419.97/x
  3. Step 3: Cross multiply
    91,985.73x = 138,017.48 × 39,419.97
  4. Step 4: Simplify right side
    91,985.73x = 5,440,644,723.98
  5. Step 5: Solve for x
    x = 5,440,644,723.98/91,985.73
  6. Step 6: Final answer
    x = 59,146.62

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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.