Home / 71,804.13-99,087.96-39,972.36

Finding the Fourth Proportional to 71,804.13, 99,087.96 and 39,972.36

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Solution

The fourth proportional to 71,804.13, 99,087.96 and 39,972.36 is: 55,160.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,804.13 : 99,087.96 = 39,972.36 : x
  2. Step 2: Convert to fraction form
    71,804.13/99,087.96 = 39,972.36/x
  3. Step 3: Cross multiply
    71,804.13x = 99,087.96 × 39,972.36
  4. Step 4: Simplify right side
    71,804.13x = 3,960,779,608.79
  5. Step 5: Solve for x
    x = 3,960,779,608.79/71,804.13
  6. Step 6: Final answer
    x = 55,160.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.