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Finding the Fourth Proportional to 71,675.49, 98,889.01 and 39,838.24

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Solution

The fourth proportional to 71,675.49, 98,889.01 and 39,838.24 is: 54,963.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,675.49 : 98,889.01 = 39,838.24 : x
  2. Step 2: Convert to fraction form
    71,675.49/98,889.01 = 39,838.24/x
  3. Step 3: Cross multiply
    71,675.49x = 98,889.01 × 39,838.24
  4. Step 4: Simplify right side
    71,675.49x = 3,939,564,113.74
  5. Step 5: Solve for x
    x = 3,939,564,113.74/71,675.49
  6. Step 6: Final answer
    x = 54,963.90

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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.