Home / 67,218.86-92,731.23-40,315.12

Finding the Fourth Proportional to 67,218.86, 92,731.23 and 40,315.12

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Solution

The fourth proportional to 67,218.86, 92,731.23 and 40,315.12 is: 55,616.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,218.86 : 92,731.23 = 40,315.12 : x
  2. Step 2: Convert to fraction form
    67,218.86/92,731.23 = 40,315.12/x
  3. Step 3: Cross multiply
    67,218.86x = 92,731.23 × 40,315.12
  4. Step 4: Simplify right side
    67,218.86x = 3,738,470,433.37
  5. Step 5: Solve for x
    x = 3,738,470,433.37/67,218.86
  6. Step 6: Final answer
    x = 55,616.39

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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.