Home / 105,421.44-145,480.38-57,674.22

Finding the Fourth Proportional to 105,421.44, 145,480.38 and 57,674.22

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Solution

The fourth proportional to 105,421.44, 145,480.38 and 57,674.22 is: 79,589.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,421.44 : 145,480.38 = 57,674.22 : x
  2. Step 2: Convert to fraction form
    105,421.44/145,480.38 = 57,674.22/x
  3. Step 3: Cross multiply
    105,421.44x = 145,480.38 × 57,674.22
  4. Step 4: Simplify right side
    105,421.44x = 8,390,467,441.80
  5. Step 5: Solve for x
    x = 8,390,467,441.80/105,421.44
  6. Step 6: Final answer
    x = 79,589.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.