Home / 71,989.36-99,342.96-39,282.47

Finding the Fourth Proportional to 71,989.36, 99,342.96 and 39,282.47

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Solution

The fourth proportional to 71,989.36, 99,342.96 and 39,282.47 is: 54,208.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,989.36 : 99,342.96 = 39,282.47 : x
  2. Step 2: Convert to fraction form
    71,989.36/99,342.96 = 39,282.47/x
  3. Step 3: Cross multiply
    71,989.36x = 99,342.96 × 39,282.47
  4. Step 4: Simplify right side
    71,989.36x = 3,902,436,574.42
  5. Step 5: Solve for x
    x = 3,902,436,574.42/71,989.36
  6. Step 6: Final answer
    x = 54,208.52

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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.