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Finding the Fourth Proportional to 77,713.64, 107,289.06 and 51,294.44

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Solution

The fourth proportional to 77,713.64, 107,289.06 and 51,294.44 is: 70,815.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,713.64 : 107,289.06 = 51,294.44 : x
  2. Step 2: Convert to fraction form
    77,713.64/107,289.06 = 51,294.44/x
  3. Step 3: Cross multiply
    77,713.64x = 107,289.06 × 51,294.44
  4. Step 4: Simplify right side
    77,713.64x = 5,503,332,250.83
  5. Step 5: Solve for x
    x = 5,503,332,250.83/77,713.64
  6. Step 6: Final answer
    x = 70,815.53

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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.