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Finding the Fourth Proportional to 75,047.49, 103,540.35 and 43,215.69

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Solution

The fourth proportional to 75,047.49, 103,540.35 and 43,215.69 is: 59,623.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,047.49 : 103,540.35 = 43,215.69 : x
  2. Step 2: Convert to fraction form
    75,047.49/103,540.35 = 43,215.69/x
  3. Step 3: Cross multiply
    75,047.49x = 103,540.35 × 43,215.69
  4. Step 4: Simplify right side
    75,047.49x = 4,474,567,668.09
  5. Step 5: Solve for x
    x = 4,474,567,668.09/75,047.49
  6. Step 6: Final answer
    x = 59,623.15

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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.