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Finding the Fourth Proportional to 71,476.92, 98,642.34 and 39,649.32

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Solution

The fourth proportional to 71,476.92, 98,642.34 and 39,649.32 is: 54,718.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,476.92 : 98,642.34 = 39,649.32 : x
  2. Step 2: Convert to fraction form
    71,476.92/98,642.34 = 39,649.32/x
  3. Step 3: Cross multiply
    71,476.92x = 98,642.34 × 39,649.32
  4. Step 4: Simplify right side
    71,476.92x = 3,911,101,704.21
  5. Step 5: Solve for x
    x = 3,911,101,704.21/71,476.92
  6. Step 6: Final answer
    x = 54,718.39

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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.