Home / 72,934.15-109,391.50-20,339.23

Finding the Fourth Proportional to 72,934.15, 109,391.50 and 20,339.23

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Solution

The fourth proportional to 72,934.15, 109,391.50 and 20,339.23 is: 30,506.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,934.15 : 109,391.50 = 20,339.23 : x
  2. Step 2: Convert to fraction form
    72,934.15/109,391.50 = 20,339.23/x
  3. Step 3: Cross multiply
    72,934.15x = 109,391.50 × 20,339.23
  4. Step 4: Simplify right side
    72,934.15x = 2,224,938,878.55
  5. Step 5: Solve for x
    x = 2,224,938,878.55/72,934.15
  6. Step 6: Final answer
    x = 30,506.13

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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.