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Finding the Fourth Proportional to 77,612.50, 107,105.39 and 44,078.50

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Solution

The fourth proportional to 77,612.50, 107,105.39 and 44,078.50 is: 60,828.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,612.50 : 107,105.39 = 44,078.50 : x
  2. Step 2: Convert to fraction form
    77,612.50/107,105.39 = 44,078.50/x
  3. Step 3: Cross multiply
    77,612.50x = 107,105.39 × 44,078.50
  4. Step 4: Simplify right side
    77,612.50x = 4,721,044,933.12
  5. Step 5: Solve for x
    x = 4,721,044,933.12/77,612.50
  6. Step 6: Final answer
    x = 60,828.41

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1.5x scale

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.