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Finding the Fourth Proportional to 71,573.90, 98,776.43 and 39,743.02

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Solution

The fourth proportional to 71,573.90, 98,776.43 and 39,743.02 is: 54,847.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,573.90 : 98,776.43 = 39,743.02 : x
  2. Step 2: Convert to fraction form
    71,573.90/98,776.43 = 39,743.02/x
  3. Step 3: Cross multiply
    71,573.90x = 98,776.43 × 39,743.02
  4. Step 4: Simplify right side
    71,573.90x = 3,925,673,434.30
  5. Step 5: Solve for x
    x = 3,925,673,434.30/71,573.90
  6. Step 6: Final answer
    x = 54,847.84

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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.