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Finding the Fourth Proportional to 69,030, 95,261.40 and 39,222

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Solution

The fourth proportional to 69,030, 95,261.40 and 39,222 is: 54,126.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,030 : 95,261.40 = 39,222 : x
  2. Step 2: Convert to fraction form
    69,030/95,261.40 = 39,222/x
  3. Step 3: Cross multiply
    69,030x = 95,261.40 × 39,222
  4. Step 4: Simplify right side
    69,030x = 3,736,342,630.80
  5. Step 5: Solve for x
    x = 3,736,342,630.80/69,030
  6. Step 6: Final answer
    x = 54,126.36

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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.