Home / 71,216.22-98,278.20-40,990.50

Finding the Fourth Proportional to 71,216.22, 98,278.20 and 40,990.50

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Solution

The fourth proportional to 71,216.22, 98,278.20 and 40,990.50 is: 56,566.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,216.22 : 98,278.20 = 40,990.50 : x
  2. Step 2: Convert to fraction form
    71,216.22/98,278.20 = 40,990.50/x
  3. Step 3: Cross multiply
    71,216.22x = 98,278.20 × 40,990.50
  4. Step 4: Simplify right side
    71,216.22x = 4,028,472,557.10
  5. Step 5: Solve for x
    x = 4,028,472,557.10/71,216.22
  6. Step 6: Final answer
    x = 56,566.78

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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.