Home / 77,991.27-107,632.88-43,987.35

Finding the Fourth Proportional to 77,991.27, 107,632.88 and 43,987.35

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Solution

The fourth proportional to 77,991.27, 107,632.88 and 43,987.35 is: 60,705.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,991.27 : 107,632.88 = 43,987.35 : x
  2. Step 2: Convert to fraction form
    77,991.27/107,632.88 = 43,987.35/x
  3. Step 3: Cross multiply
    77,991.27x = 107,632.88 × 43,987.35
  4. Step 4: Simplify right side
    77,991.27x = 4,734,485,164.07
  5. Step 5: Solve for x
    x = 4,734,485,164.07/77,991.27
  6. Step 6: Final answer
    x = 60,705.32

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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.