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Finding the Fourth Proportional to 53,133.69, 79,687.75 and 15,683.66

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Solution

The fourth proportional to 53,133.69, 79,687.75 and 15,683.66 is: 23,521.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,133.69 : 79,687.75 = 15,683.66 : x
  2. Step 2: Convert to fraction form
    53,133.69/79,687.75 = 15,683.66/x
  3. Step 3: Cross multiply
    53,133.69x = 79,687.75 × 15,683.66
  4. Step 4: Simplify right side
    53,133.69x = 1,249,795,577.17
  5. Step 5: Solve for x
    x = 1,249,795,577.17/53,133.69
  6. Step 6: Final answer
    x = 23,521.72

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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.