Home / 83,289.40-124,989.41-38,919.58

Finding the Fourth Proportional to 83,289.40, 124,989.41 and 38,919.58

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Solution

The fourth proportional to 83,289.40, 124,989.41 and 38,919.58 is: 58,405.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,289.40 : 124,989.41 = 38,919.58 : x
  2. Step 2: Convert to fraction form
    83,289.40/124,989.41 = 38,919.58/x
  3. Step 3: Cross multiply
    83,289.40x = 124,989.41 × 38,919.58
  4. Step 4: Simplify right side
    83,289.40x = 4,864,535,126.47
  5. Step 5: Solve for x
    x = 4,864,535,126.47/83,289.40
  6. Step 6: Final answer
    x = 58,405.21

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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.