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Finding the Fourth Proportional to 75,615.54, 104,348.43 and 42,081.54

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Solution

The fourth proportional to 75,615.54, 104,348.43 and 42,081.54 is: 58,071.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,615.54 : 104,348.43 = 42,081.54 : x
  2. Step 2: Convert to fraction form
    75,615.54/104,348.43 = 42,081.54/x
  3. Step 3: Cross multiply
    75,615.54x = 104,348.43 × 42,081.54
  4. Step 4: Simplify right side
    75,615.54x = 4,391,142,630.98
  5. Step 5: Solve for x
    x = 4,391,142,630.98/75,615.54
  6. Step 6: Final answer
    x = 58,071.96

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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.