Home / 40,868.85-61,295.60-12,784.70

Finding the Fourth Proportional to 40,868.85, 61,295.60 and 12,784.70

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Solution

The fourth proportional to 40,868.85, 61,295.60 and 12,784.70 is: 19,174.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,868.85 : 61,295.60 = 12,784.70 : x
  2. Step 2: Convert to fraction form
    40,868.85/61,295.60 = 12,784.70/x
  3. Step 3: Cross multiply
    40,868.85x = 61,295.60 × 12,784.70
  4. Step 4: Simplify right side
    40,868.85x = 783,646,042.52
  5. Step 5: Solve for x
    x = 783,646,042.52/40,868.85
  6. Step 6: Final answer
    x = 19,174.65

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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.