Home / 77,778.77-116,642.21-30,381.58

Finding the Fourth Proportional to 77,778.77, 116,642.21 and 30,381.58

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Solution

The fourth proportional to 77,778.77, 116,642.21 and 30,381.58 is: 45,562.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,778.77 : 116,642.21 = 30,381.58 : x
  2. Step 2: Convert to fraction form
    77,778.77/116,642.21 = 30,381.58/x
  3. Step 3: Cross multiply
    77,778.77x = 116,642.21 × 30,381.58
  4. Step 4: Simplify right side
    77,778.77x = 3,543,774,634.49
  5. Step 5: Solve for x
    x = 3,543,774,634.49/77,778.77
  6. Step 6: Final answer
    x = 45,562.24

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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.