Home / 74,320.20-111,480.30-38,890.80

Finding the Fourth Proportional to 74,320.20, 111,480.30 and 38,890.80

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Solution

The fourth proportional to 74,320.20, 111,480.30 and 38,890.80 is: 58,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,320.20 : 111,480.30 = 38,890.80 : x
  2. Step 2: Convert to fraction form
    74,320.20/111,480.30 = 38,890.80/x
  3. Step 3: Cross multiply
    74,320.20x = 111,480.30 × 38,890.80
  4. Step 4: Simplify right side
    74,320.20x = 4,335,558,051.24
  5. Step 5: Solve for x
    x = 4,335,558,051.24/74,320.20
  6. Step 6: Final answer
    x = 58,336.20

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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.