Home / 77,651.28-107,016.66-56,393.64

Finding the Fourth Proportional to 77,651.28, 107,016.66 and 56,393.64

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Solution

The fourth proportional to 77,651.28, 107,016.66 and 56,393.64 is: 77,720.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,651.28 : 107,016.66 = 56,393.64 : x
  2. Step 2: Convert to fraction form
    77,651.28/107,016.66 = 56,393.64/x
  3. Step 3: Cross multiply
    77,651.28x = 107,016.66 × 56,393.64
  4. Step 4: Simplify right side
    77,651.28x = 6,035,058,998.04
  5. Step 5: Solve for x
    x = 6,035,058,998.04/77,651.28
  6. Step 6: Final answer
    x = 77,720.02

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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.