Home / 71,516.28-98,684.46-39,686.52

Finding the Fourth Proportional to 71,516.28, 98,684.46 and 39,686.52

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Solution

The fourth proportional to 71,516.28, 98,684.46 and 39,686.52 is: 54,762.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,516.28 : 98,684.46 = 39,686.52 : x
  2. Step 2: Convert to fraction form
    71,516.28/98,684.46 = 39,686.52/x
  3. Step 3: Cross multiply
    71,516.28x = 98,684.46 × 39,686.52
  4. Step 4: Simplify right side
    71,516.28x = 3,916,442,795.48
  5. Step 5: Solve for x
    x = 3,916,442,795.48/71,516.28
  6. Step 6: Final answer
    x = 54,762.95

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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.