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Finding the Fourth Proportional to 78,054.75, 107,715.56 and 44,520.75

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Solution

The fourth proportional to 78,054.75, 107,715.56 and 44,520.75 is: 61,438.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,054.75 : 107,715.56 = 44,520.75 : x
  2. Step 2: Convert to fraction form
    78,054.75/107,715.56 = 44,520.75/x
  3. Step 3: Cross multiply
    78,054.75x = 107,715.56 × 44,520.75
  4. Step 4: Simplify right side
    78,054.75x = 4,795,577,295.27
  5. Step 5: Solve for x
    x = 4,795,577,295.27/78,054.75
  6. Step 6: Final answer
    x = 61,438.64

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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.