Home / 80,862.68-121,289.90-30,938.94

Finding the Fourth Proportional to 80,862.68, 121,289.90 and 30,938.94

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Solution

The fourth proportional to 80,862.68, 121,289.90 and 30,938.94 is: 46,406.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,862.68 : 121,289.90 = 30,938.94 : x
  2. Step 2: Convert to fraction form
    80,862.68/121,289.90 = 30,938.94/x
  3. Step 3: Cross multiply
    80,862.68x = 121,289.90 × 30,938.94
  4. Step 4: Simplify right side
    80,862.68x = 3,752,580,938.71
  5. Step 5: Solve for x
    x = 3,752,580,938.71/80,862.68
  6. Step 6: Final answer
    x = 46,406.83

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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.