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Finding the Fourth Proportional to 69,215.20, 103,784.40 and 27,615.20

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Solution

The fourth proportional to 69,215.20, 103,784.40 and 27,615.20 is: 41,407.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,215.20 : 103,784.40 = 27,615.20 : x
  2. Step 2: Convert to fraction form
    69,215.20/103,784.40 = 27,615.20/x
  3. Step 3: Cross multiply
    69,215.20x = 103,784.40 × 27,615.20
  4. Step 4: Simplify right side
    69,215.20x = 2,866,026,962.88
  5. Step 5: Solve for x
    x = 2,866,026,962.88/69,215.20
  6. Step 6: Final answer
    x = 41,407.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.