Home / 67,890.43-93,623.70-40,662.15

Finding the Fourth Proportional to 67,890.43, 93,623.70 and 40,662.15

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Solution

The fourth proportional to 67,890.43, 93,623.70 and 40,662.15 is: 56,074.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,890.43 : 93,623.70 = 40,662.15 : x
  2. Step 2: Convert to fraction form
    67,890.43/93,623.70 = 40,662.15/x
  3. Step 3: Cross multiply
    67,890.43x = 93,623.70 × 40,662.15
  4. Step 4: Simplify right side
    67,890.43x = 3,806,941,032.26
  5. Step 5: Solve for x
    x = 3,806,941,032.26/67,890.43
  6. Step 6: Final answer
    x = 56,074.78

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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.