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Finding the Fourth Proportional to 67,722.74, 93,457.65 and 39,447.86

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Solution

The fourth proportional to 67,722.74, 93,457.65 and 39,447.86 is: 54,438.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,722.74 : 93,457.65 = 39,447.86 : x
  2. Step 2: Convert to fraction form
    67,722.74/93,457.65 = 39,447.86/x
  3. Step 3: Cross multiply
    67,722.74x = 93,457.65 × 39,447.86
  4. Step 4: Simplify right side
    67,722.74x = 3,686,704,293.13
  5. Step 5: Solve for x
    x = 3,686,704,293.13/67,722.74
  6. Step 6: Final answer
    x = 54,438.20

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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.