Home / 81,172.64-112,031.04-49,351.52

Finding the Fourth Proportional to 81,172.64, 112,031.04 and 49,351.52

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Solution

The fourth proportional to 81,172.64, 112,031.04 and 49,351.52 is: 68,112.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,172.64 : 112,031.04 = 49,351.52 : x
  2. Step 2: Convert to fraction form
    81,172.64/112,031.04 = 49,351.52/x
  3. Step 3: Cross multiply
    81,172.64x = 112,031.04 × 49,351.52
  4. Step 4: Simplify right side
    81,172.64x = 5,528,902,111.18
  5. Step 5: Solve for x
    x = 5,528,902,111.18/81,172.64
  6. Step 6: Final answer
    x = 68,112.88

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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.