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Finding the Fourth Proportional to 71,366.40, 98,483.20 and 39,536.64

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Solution

The fourth proportional to 71,366.40, 98,483.20 and 39,536.64 is: 54,559.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,366.40 : 98,483.20 = 39,536.64 : x
  2. Step 2: Convert to fraction form
    71,366.40/98,483.20 = 39,536.64/x
  3. Step 3: Cross multiply
    71,366.40x = 98,483.20 × 39,536.64
  4. Step 4: Simplify right side
    71,366.40x = 3,893,694,824.45
  5. Step 5: Solve for x
    x = 3,893,694,824.45/71,366.40
  6. Step 6: Final answer
    x = 54,559.22

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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.