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Finding the Fourth Proportional to 77,989.13, 107,638.25 and 44,007.25

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Solution

The fourth proportional to 77,989.13, 107,638.25 and 44,007.25 is: 60,737.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,989.13 : 107,638.25 = 44,007.25 : x
  2. Step 2: Convert to fraction form
    77,989.13/107,638.25 = 44,007.25/x
  3. Step 3: Cross multiply
    77,989.13x = 107,638.25 × 44,007.25
  4. Step 4: Simplify right side
    77,989.13x = 4,736,863,377.31
  5. Step 5: Solve for x
    x = 4,736,863,377.31/77,989.13
  6. Step 6: Final answer
    x = 60,737.48

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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.