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Finding the Fourth Proportional to 71,655.30, 98,884.80 and 39,824.73

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Solution

The fourth proportional to 71,655.30, 98,884.80 and 39,824.73 is: 54,958.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,655.30 : 98,884.80 = 39,824.73 : x
  2. Step 2: Convert to fraction form
    71,655.30/98,884.80 = 39,824.73/x
  3. Step 3: Cross multiply
    71,655.30x = 98,884.80 × 39,824.73
  4. Step 4: Simplify right side
    71,655.30x = 3,938,060,461.10
  5. Step 5: Solve for x
    x = 3,938,060,461.10/71,655.30
  6. Step 6: Final answer
    x = 54,958.40

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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.