Home / 82,975.40-124,448.70-30,357.80

Finding the Fourth Proportional to 82,975.40, 124,448.70 and 30,357.80

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Solution

The fourth proportional to 82,975.40, 124,448.70 and 30,357.80 is: 45,531.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,975.40 : 124,448.70 = 30,357.80 : x
  2. Step 2: Convert to fraction form
    82,975.40/124,448.70 = 30,357.80/x
  3. Step 3: Cross multiply
    82,975.40x = 124,448.70 × 30,357.80
  4. Step 4: Simplify right side
    82,975.40x = 3,777,988,744.86
  5. Step 5: Solve for x
    x = 3,777,988,744.86/82,975.40
  6. Step 6: Final answer
    x = 45,531.43

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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.