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Finding the Fourth Proportional to 77,980.25, 107,623.28 and 43,995.71

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Solution

The fourth proportional to 77,980.25, 107,623.28 and 43,995.71 is: 60,720.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,980.25 : 107,623.28 = 43,995.71 : x
  2. Step 2: Convert to fraction form
    77,980.25/107,623.28 = 43,995.71/x
  3. Step 3: Cross multiply
    77,980.25x = 107,623.28 × 43,995.71
  4. Step 4: Simplify right side
    77,980.25x = 4,734,962,396.15
  5. Step 5: Solve for x
    x = 4,734,962,396.15/77,980.25
  6. Step 6: Final answer
    x = 60,720.02

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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.