Home / 40,808.16-56,324.04-31,142.72

Finding the Fourth Proportional to 40,808.16, 56,324.04 and 31,142.72

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Solution

The fourth proportional to 40,808.16, 56,324.04 and 31,142.72 is: 42,983.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,808.16 : 56,324.04 = 31,142.72 : x
  2. Step 2: Convert to fraction form
    40,808.16/56,324.04 = 31,142.72/x
  3. Step 3: Cross multiply
    40,808.16x = 56,324.04 × 31,142.72
  4. Step 4: Simplify right side
    40,808.16x = 1,754,083,806.99
  5. Step 5: Solve for x
    x = 1,754,083,806.99/40,808.16
  6. Step 6: Final answer
    x = 42,983.65

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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.