Home / 40,495.90-55,860.28-31,529.20

Finding the Fourth Proportional to 40,495.90, 55,860.28 and 31,529.20

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Solution

The fourth proportional to 40,495.90, 55,860.28 and 31,529.20 is: 43,491.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,495.90 : 55,860.28 = 31,529.20 : x
  2. Step 2: Convert to fraction form
    40,495.90/55,860.28 = 31,529.20/x
  3. Step 3: Cross multiply
    40,495.90x = 55,860.28 × 31,529.20
  4. Step 4: Simplify right side
    40,495.90x = 1,761,229,940.18
  5. Step 5: Solve for x
    x = 1,761,229,940.18/40,495.90
  6. Step 6: Final answer
    x = 43,491.56

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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.