Home / 71,964.66-99,309.02-40,138.94

Finding the Fourth Proportional to 71,964.66, 99,309.02 and 40,138.94

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Solution

The fourth proportional to 71,964.66, 99,309.02 and 40,138.94 is: 55,390.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,964.66 : 99,309.02 = 40,138.94 : x
  2. Step 2: Convert to fraction form
    71,964.66/99,309.02 = 40,138.94/x
  3. Step 3: Cross multiply
    71,964.66x = 99,309.02 × 40,138.94
  4. Step 4: Simplify right side
    71,964.66x = 3,986,158,795.24
  5. Step 5: Solve for x
    x = 3,986,158,795.24/71,964.66
  6. Step 6: Final answer
    x = 55,390.50

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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.