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Finding the Fourth Proportional to 61,861.96, 92,747.50 and 19,717.80

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Solution

The fourth proportional to 61,861.96, 92,747.50 and 19,717.80 is: 29,562.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,861.96 : 92,747.50 = 19,717.80 : x
  2. Step 2: Convert to fraction form
    61,861.96/92,747.50 = 19,717.80/x
  3. Step 3: Cross multiply
    61,861.96x = 92,747.50 × 19,717.80
  4. Step 4: Simplify right side
    61,861.96x = 1,828,776,655.50
  5. Step 5: Solve for x
    x = 1,828,776,655.50/61,861.96
  6. Step 6: Final answer
    x = 29,562.22

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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.