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Finding the Fourth Proportional to 73,150.80, 109,726.20 and 20,569.20

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Solution

The fourth proportional to 73,150.80, 109,726.20 and 20,569.20 is: 30,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,150.80 : 109,726.20 = 20,569.20 : x
  2. Step 2: Convert to fraction form
    73,150.80/109,726.20 = 20,569.20/x
  3. Step 3: Cross multiply
    73,150.80x = 109,726.20 × 20,569.20
  4. Step 4: Simplify right side
    73,150.80x = 2,256,980,153.04
  5. Step 5: Solve for x
    x = 2,256,980,153.04/73,150.80
  6. Step 6: Final answer
    x = 30,853.80

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1.5x scale

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.