Home / 78,849.20-108,807.90-43,038.92

Finding the Fourth Proportional to 78,849.20, 108,807.90 and 43,038.92

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Solution

The fourth proportional to 78,849.20, 108,807.90 and 43,038.92 is: 59,391.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,849.20 : 108,807.90 = 43,038.92 : x
  2. Step 2: Convert to fraction form
    78,849.20/108,807.90 = 43,038.92/x
  3. Step 3: Cross multiply
    78,849.20x = 108,807.90 × 43,038.92
  4. Step 4: Simplify right side
    78,849.20x = 4,682,974,503.47
  5. Step 5: Solve for x
    x = 4,682,974,503.47/78,849.20
  6. Step 6: Final answer
    x = 59,391.53

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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.