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Finding the Fourth Proportional to 76,644.70, 105,679.22 and 52,457.33

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Solution

The fourth proportional to 76,644.70, 105,679.22 and 52,457.33 is: 72,329.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,644.70 : 105,679.22 = 52,457.33 : x
  2. Step 2: Convert to fraction form
    76,644.70/105,679.22 = 52,457.33/x
  3. Step 3: Cross multiply
    76,644.70x = 105,679.22 × 52,457.33
  4. Step 4: Simplify right side
    76,644.70x = 5,543,649,719.59
  5. Step 5: Solve for x
    x = 5,543,649,719.59/76,644.70
  6. Step 6: Final answer
    x = 72,329.20

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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.