Home / 71,865.55-107,790.10-19,270.95

Finding the Fourth Proportional to 71,865.55, 107,790.10 and 19,270.95

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Solution

The fourth proportional to 71,865.55, 107,790.10 and 19,270.95 is: 28,904.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,865.55 : 107,790.10 = 19,270.95 : x
  2. Step 2: Convert to fraction form
    71,865.55/107,790.10 = 19,270.95/x
  3. Step 3: Cross multiply
    71,865.55x = 107,790.10 × 19,270.95
  4. Step 4: Simplify right side
    71,865.55x = 2,077,217,627.60
  5. Step 5: Solve for x
    x = 2,077,217,627.60/71,865.55
  6. Step 6: Final answer
    x = 28,904.22

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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.