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Finding the Fourth Proportional to 67,722.57, 93,457.83 and 40,859.88

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Solution

The fourth proportional to 67,722.57, 93,457.83 and 40,859.88 is: 56,387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,722.57 : 93,457.83 = 40,859.88 : x
  2. Step 2: Convert to fraction form
    67,722.57/93,457.83 = 40,859.88/x
  3. Step 3: Cross multiply
    67,722.57x = 93,457.83 × 40,859.88
  4. Step 4: Simplify right side
    67,722.57x = 3,818,675,718.86
  5. Step 5: Solve for x
    x = 3,818,675,718.86/67,722.57
  6. Step 6: Final answer
    x = 56,387.05

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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.