Home / 76,816.32-105,998.88-56,684.16

Finding the Fourth Proportional to 76,816.32, 105,998.88 and 56,684.16

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Solution

The fourth proportional to 76,816.32, 105,998.88 and 56,684.16 is: 78,218.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,816.32 : 105,998.88 = 56,684.16 : x
  2. Step 2: Convert to fraction form
    76,816.32/105,998.88 = 56,684.16/x
  3. Step 3: Cross multiply
    76,816.32x = 105,998.88 × 56,684.16
  4. Step 4: Simplify right side
    76,816.32x = 6,008,457,473.74
  5. Step 5: Solve for x
    x = 6,008,457,473.74/76,816.32
  6. Step 6: Final answer
    x = 78,218.50

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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.