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Finding the Fourth Proportional to 61,665.79, 85,089.67 and 36,162.53

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Solution

The fourth proportional to 61,665.79, 85,089.67 and 36,162.53 is: 49,898.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,665.79 : 85,089.67 = 36,162.53 : x
  2. Step 2: Convert to fraction form
    61,665.79/85,089.67 = 36,162.53/x
  3. Step 3: Cross multiply
    61,665.79x = 85,089.67 × 36,162.53
  4. Step 4: Simplify right side
    61,665.79x = 3,077,057,866.38
  5. Step 5: Solve for x
    x = 3,077,057,866.38/61,665.79
  6. Step 6: Final answer
    x = 49,898.95

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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.