Home / 51,650.28-71,278.80-28,990.68

Finding the Fourth Proportional to 51,650.28, 71,278.80 and 28,990.68

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Solution

The fourth proportional to 51,650.28, 71,278.80 and 28,990.68 is: 40,007.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,650.28 : 71,278.80 = 28,990.68 : x
  2. Step 2: Convert to fraction form
    51,650.28/71,278.80 = 28,990.68/x
  3. Step 3: Cross multiply
    51,650.28x = 71,278.80 × 28,990.68
  4. Step 4: Simplify right side
    51,650.28x = 2,066,420,881.58
  5. Step 5: Solve for x
    x = 2,066,420,881.58/51,650.28
  6. Step 6: Final answer
    x = 40,007.93

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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.