Home / 42,400.20-63,600.30-39,289.80

Finding the Fourth Proportional to 42,400.20, 63,600.30 and 39,289.80

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Solution

The fourth proportional to 42,400.20, 63,600.30 and 39,289.80 is: 58,934.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,400.20 : 63,600.30 = 39,289.80 : x
  2. Step 2: Convert to fraction form
    42,400.20/63,600.30 = 39,289.80/x
  3. Step 3: Cross multiply
    42,400.20x = 63,600.30 × 39,289.80
  4. Step 4: Simplify right side
    42,400.20x = 2,498,843,066.94
  5. Step 5: Solve for x
    x = 2,498,843,066.94/42,400.20
  6. Step 6: Final answer
    x = 58,934.70

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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.