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Finding the Fourth Proportional to 76,816.94, 114,571.90 and 75,487.74

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Solution

The fourth proportional to 76,816.94, 114,571.90 and 75,487.74 is: 112,589.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,816.94 : 114,571.90 = 75,487.74 : x
  2. Step 2: Convert to fraction form
    76,816.94/114,571.90 = 75,487.74/x
  3. Step 3: Cross multiply
    76,816.94x = 114,571.90 × 75,487.74
  4. Step 4: Simplify right side
    76,816.94x = 8,648,773,798.51
  5. Step 5: Solve for x
    x = 8,648,773,798.51/76,816.94
  6. Step 6: Final answer
    x = 112,589.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.