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Finding the Fourth Proportional to 61,376.94, 92,129.81 and 54,401.63

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Solution

The fourth proportional to 61,376.94, 92,129.81 and 54,401.63 is: 81,659.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,376.94 : 92,129.81 = 54,401.63 : x
  2. Step 2: Convert to fraction form
    61,376.94/92,129.81 = 54,401.63/x
  3. Step 3: Cross multiply
    61,376.94x = 92,129.81 × 54,401.63
  4. Step 4: Simplify right side
    61,376.94x = 5,012,011,102.93
  5. Step 5: Solve for x
    x = 5,012,011,102.93/61,376.94
  6. Step 6: Final answer
    x = 81,659.51

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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.