Home / 79,129.05-118,689.45-19,965.23

Finding the Fourth Proportional to 79,129.05, 118,689.45 and 19,965.23

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Solution

The fourth proportional to 79,129.05, 118,689.45 and 19,965.23 is: 29,946.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,129.05 : 118,689.45 = 19,965.23 : x
  2. Step 2: Convert to fraction form
    79,129.05/118,689.45 = 19,965.23/x
  3. Step 3: Cross multiply
    79,129.05x = 118,689.45 × 19,965.23
  4. Step 4: Simplify right side
    79,129.05x = 2,369,662,724.52
  5. Step 5: Solve for x
    x = 2,369,662,724.52/79,129.05
  6. Step 6: Final answer
    x = 29,946.81

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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.