Home / 72,730.26-109,095.41-20,139.74

Finding the Fourth Proportional to 72,730.26, 109,095.41 and 20,139.74

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Solution

The fourth proportional to 72,730.26, 109,095.41 and 20,139.74 is: 30,209.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,730.26 : 109,095.41 = 20,139.74 : x
  2. Step 2: Convert to fraction form
    72,730.26/109,095.41 = 20,139.74/x
  3. Step 3: Cross multiply
    72,730.26x = 109,095.41 × 20,139.74
  4. Step 4: Simplify right side
    72,730.26x = 2,197,153,106.57
  5. Step 5: Solve for x
    x = 2,197,153,106.57/72,730.26
  6. Step 6: Final answer
    x = 30,209.61

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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.