Home / 67,221.41-100,864.74-42,273.20

Finding the Fourth Proportional to 67,221.41, 100,864.74 and 42,273.20

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Solution

The fourth proportional to 67,221.41, 100,864.74 and 42,273.20 is: 63,430.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,221.41 : 100,864.74 = 42,273.20 : x
  2. Step 2: Convert to fraction form
    67,221.41/100,864.74 = 42,273.20/x
  3. Step 3: Cross multiply
    67,221.41x = 100,864.74 × 42,273.20
  4. Step 4: Simplify right side
    67,221.41x = 4,263,875,326.97
  5. Step 5: Solve for x
    x = 4,263,875,326.97/67,221.41
  6. Step 6: Final answer
    x = 63,430.32

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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.