Home / 53,121.81-79,691.37-15,685.67

Finding the Fourth Proportional to 53,121.81, 79,691.37 and 15,685.67

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Solution

The fourth proportional to 53,121.81, 79,691.37 and 15,685.67 is: 23,531.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,121.81 : 79,691.37 = 15,685.67 : x
  2. Step 2: Convert to fraction form
    53,121.81/79,691.37 = 15,685.67/x
  3. Step 3: Cross multiply
    53,121.81x = 79,691.37 × 15,685.67
  4. Step 4: Simplify right side
    53,121.81x = 1,250,012,531.67
  5. Step 5: Solve for x
    x = 1,250,012,531.67/53,121.81
  6. Step 6: Final answer
    x = 23,531.06

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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.