Home / 76,727.94-105,913.35-56,745.65

Finding the Fourth Proportional to 76,727.94, 105,913.35 and 56,745.65

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Solution

The fourth proportional to 76,727.94, 105,913.35 and 56,745.65 is: 78,330.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,727.94 : 105,913.35 = 56,745.65 : x
  2. Step 2: Convert to fraction form
    76,727.94/105,913.35 = 56,745.65/x
  3. Step 3: Cross multiply
    76,727.94x = 105,913.35 × 56,745.65
  4. Step 4: Simplify right side
    76,727.94x = 6,010,121,359.86
  5. Step 5: Solve for x
    x = 6,010,121,359.86/76,727.94
  6. Step 6: Final answer
    x = 78,330.28

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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.