Home / 53,121.64-79,691.12-15,685.50

Finding the Fourth Proportional to 53,121.64, 79,691.12 and 15,685.50

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Solution

The fourth proportional to 53,121.64, 79,691.12 and 15,685.50 is: 23,530.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,121.64 : 79,691.12 = 15,685.50 : x
  2. Step 2: Convert to fraction form
    53,121.64/79,691.12 = 15,685.50/x
  3. Step 3: Cross multiply
    53,121.64x = 79,691.12 × 15,685.50
  4. Step 4: Simplify right side
    53,121.64x = 1,249,995,062.76
  5. Step 5: Solve for x
    x = 1,249,995,062.76/53,121.64
  6. Step 6: Final answer
    x = 23,530.81

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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.