Home / 53,121.31-79,690.62-15,685.17

Finding the Fourth Proportional to 53,121.31, 79,690.62 and 15,685.17

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Solution

The fourth proportional to 53,121.31, 79,690.62 and 15,685.17 is: 23,530.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,121.31 : 79,690.62 = 15,685.17 : x
  2. Step 2: Convert to fraction form
    53,121.31/79,690.62 = 15,685.17/x
  3. Step 3: Cross multiply
    53,121.31x = 79,690.62 × 15,685.17
  4. Step 4: Simplify right side
    53,121.31x = 1,249,960,922.11
  5. Step 5: Solve for x
    x = 1,249,960,922.11/53,121.31
  6. Step 6: Final answer
    x = 23,530.31

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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.