Home / 77,019.36-115,589.20-39,577.92

Finding the Fourth Proportional to 77,019.36, 115,589.20 and 39,577.92

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Solution

The fourth proportional to 77,019.36, 115,589.20 and 39,577.92 is: 59,397.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,019.36 : 115,589.20 = 39,577.92 : x
  2. Step 2: Convert to fraction form
    77,019.36/115,589.20 = 39,577.92/x
  3. Step 3: Cross multiply
    77,019.36x = 115,589.20 × 39,577.92
  4. Step 4: Simplify right side
    77,019.36x = 4,574,780,110.46
  5. Step 5: Solve for x
    x = 4,574,780,110.46/77,019.36
  6. Step 6: Final answer
    x = 59,397.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.