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Finding the Fourth Proportional to 61,064.65, 91,610.06 and 18,943.83

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Solution

The fourth proportional to 61,064.65, 91,610.06 and 18,943.83 is: 28,419.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,064.65 : 91,610.06 = 18,943.83 : x
  2. Step 2: Convert to fraction form
    61,064.65/91,610.06 = 18,943.83/x
  3. Step 3: Cross multiply
    61,064.65x = 91,610.06 × 18,943.83
  4. Step 4: Simplify right side
    61,064.65x = 1,735,445,402.93
  5. Step 5: Solve for x
    x = 1,735,445,402.93/61,064.65
  6. Step 6: Final answer
    x = 28,419.80

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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.