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Finding the Fourth Proportional to 71,283.44, 98,369.62 and 39,018.06

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Solution

The fourth proportional to 71,283.44, 98,369.62 and 39,018.06 is: 53,844.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,283.44 : 98,369.62 = 39,018.06 : x
  2. Step 2: Convert to fraction form
    71,283.44/98,369.62 = 39,018.06/x
  3. Step 3: Cross multiply
    71,283.44x = 98,369.62 × 39,018.06
  4. Step 4: Simplify right side
    71,283.44x = 3,838,191,735.34
  5. Step 5: Solve for x
    x = 3,838,191,735.34/71,283.44
  6. Step 6: Final answer
    x = 53,844.09

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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.