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Finding the Fourth Proportional to 71,282.80, 98,367.24 and 39,448.72

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Solution

The fourth proportional to 71,282.80, 98,367.24 and 39,448.72 is: 54,437.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,282.80 : 98,367.24 = 39,448.72 : x
  2. Step 2: Convert to fraction form
    71,282.80/98,367.24 = 39,448.72/x
  3. Step 3: Cross multiply
    71,282.80x = 98,367.24 × 39,448.72
  4. Step 4: Simplify right side
    71,282.80x = 3,880,461,707.93
  5. Step 5: Solve for x
    x = 3,880,461,707.93/71,282.80
  6. Step 6: Final answer
    x = 54,437.56

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1.5x scale

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.