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Finding the Fourth Proportional to 61,126.51, 91,679.92 and 16,742.88

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Solution

The fourth proportional to 61,126.51, 91,679.92 and 16,742.88 is: 25,111.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,126.51 : 91,679.92 = 16,742.88 : x
  2. Step 2: Convert to fraction form
    61,126.51/91,679.92 = 16,742.88/x
  3. Step 3: Cross multiply
    61,126.51x = 91,679.92 × 16,742.88
  4. Step 4: Simplify right side
    61,126.51x = 1,534,985,898.97
  5. Step 5: Solve for x
    x = 1,534,985,898.97/61,126.51
  6. Step 6: Final answer
    x = 25,111.62

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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.