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Finding the Fourth Proportional to 71,476.29, 98,649.09 and 39,655.44

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Solution

The fourth proportional to 71,476.29, 98,649.09 and 39,655.44 is: 54,731.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,476.29 : 98,649.09 = 39,655.44 : x
  2. Step 2: Convert to fraction form
    71,476.29/98,649.09 = 39,655.44/x
  3. Step 3: Cross multiply
    71,476.29x = 98,649.09 × 39,655.44
  4. Step 4: Simplify right side
    71,476.29x = 3,911,973,069.55
  5. Step 5: Solve for x
    x = 3,911,973,069.55/71,476.29
  6. Step 6: Final answer
    x = 54,731.06

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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.