Home / 77,776.77-116,639.21-30,379.58

Finding the Fourth Proportional to 77,776.77, 116,639.21 and 30,379.58

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Solution

The fourth proportional to 77,776.77, 116,639.21 and 30,379.58 is: 45,559.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,776.77 : 116,639.21 = 30,379.58 : x
  2. Step 2: Convert to fraction form
    77,776.77/116,639.21 = 30,379.58/x
  3. Step 3: Cross multiply
    77,776.77x = 116,639.21 × 30,379.58
  4. Step 4: Simplify right side
    77,776.77x = 3,543,449,628.14
  5. Step 5: Solve for x
    x = 3,543,449,628.14/77,776.77
  6. Step 6: Final answer
    x = 45,559.23

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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.