Home / 76,486.20-105,521.46-56,390.84

Finding the Fourth Proportional to 76,486.20, 105,521.46 and 56,390.84

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Solution

The fourth proportional to 76,486.20, 105,521.46 and 56,390.84 is: 77,797.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,486.20 : 105,521.46 = 56,390.84 : x
  2. Step 2: Convert to fraction form
    76,486.20/105,521.46 = 56,390.84/x
  3. Step 3: Cross multiply
    76,486.20x = 105,521.46 × 56,390.84
  4. Step 4: Simplify right side
    76,486.20x = 5,950,443,767.43
  5. Step 5: Solve for x
    x = 5,950,443,767.43/76,486.20
  6. Step 6: Final answer
    x = 77,797.61

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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.