Home / 40,389.66-55,620.14-31,422.06

Finding the Fourth Proportional to 40,389.66, 55,620.14 and 31,422.06

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Solution

The fourth proportional to 40,389.66, 55,620.14 and 31,422.06 is: 43,270.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,389.66 : 55,620.14 = 31,422.06 : x
  2. Step 2: Convert to fraction form
    40,389.66/55,620.14 = 31,422.06/x
  3. Step 3: Cross multiply
    40,389.66x = 55,620.14 × 31,422.06
  4. Step 4: Simplify right side
    40,389.66x = 1,747,699,376.29
  5. Step 5: Solve for x
    x = 1,747,699,376.29/40,389.66
  6. Step 6: Final answer
    x = 43,270.96

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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.