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Finding the Fourth Proportional to 71,656.25, 98,884.91 and 39,824.46

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Solution

The fourth proportional to 71,656.25, 98,884.91 and 39,824.46 is: 54,957.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,656.25 : 98,884.91 = 39,824.46 : x
  2. Step 2: Convert to fraction form
    71,656.25/98,884.91 = 39,824.46/x
  3. Step 3: Cross multiply
    71,656.25x = 98,884.91 × 39,824.46
  4. Step 4: Simplify right side
    71,656.25x = 3,938,038,290.55
  5. Step 5: Solve for x
    x = 3,938,038,290.55/71,656.25
  6. Step 6: Final answer
    x = 54,957.36

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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.