Home / 42,879.68-63,939.28-40,019.84

Finding the Fourth Proportional to 42,879.68, 63,939.28 and 40,019.84

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Solution

The fourth proportional to 42,879.68, 63,939.28 and 40,019.84 is: 59,674.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,879.68 : 63,939.28 = 40,019.84 : x
  2. Step 2: Convert to fraction form
    42,879.68/63,939.28 = 40,019.84/x
  3. Step 3: Cross multiply
    42,879.68x = 63,939.28 × 40,019.84
  4. Step 4: Simplify right side
    42,879.68x = 2,558,839,755.32
  5. Step 5: Solve for x
    x = 2,558,839,755.32/42,879.68
  6. Step 6: Final answer
    x = 59,674.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.