Home / 83,748.51-115,521.11-55,071.47

Finding the Fourth Proportional to 83,748.51, 115,521.11 and 55,071.47

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Solution

The fourth proportional to 83,748.51, 115,521.11 and 55,071.47 is: 75,964.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,748.51 : 115,521.11 = 55,071.47 : x
  2. Step 2: Convert to fraction form
    83,748.51/115,521.11 = 55,071.47/x
  3. Step 3: Cross multiply
    83,748.51x = 115,521.11 × 55,071.47
  4. Step 4: Simplify right side
    83,748.51x = 6,361,917,343.73
  5. Step 5: Solve for x
    x = 6,361,917,343.73/83,748.51
  6. Step 6: Final answer
    x = 75,964.54

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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.