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Finding the Fourth Proportional to 77,807.61, 107,379.95 and 44,273.61

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Solution

The fourth proportional to 77,807.61, 107,379.95 and 44,273.61 is: 61,100.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,807.61 : 107,379.95 = 44,273.61 : x
  2. Step 2: Convert to fraction form
    77,807.61/107,379.95 = 44,273.61/x
  3. Step 3: Cross multiply
    77,807.61x = 107,379.95 × 44,273.61
  4. Step 4: Simplify right side
    77,807.61x = 4,754,097,806.75
  5. Step 5: Solve for x
    x = 4,754,097,806.75/77,807.61
  6. Step 6: Final answer
    x = 61,100.68

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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.