Home / 40,409.34-55,745.59-31,395.15

Finding the Fourth Proportional to 40,409.34, 55,745.59 and 31,395.15

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Solution

The fourth proportional to 40,409.34, 55,745.59 and 31,395.15 is: 43,310.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,409.34 : 55,745.59 = 31,395.15 : x
  2. Step 2: Convert to fraction form
    40,409.34/55,745.59 = 31,395.15/x
  3. Step 3: Cross multiply
    40,409.34x = 55,745.59 × 31,395.15
  4. Step 4: Simplify right side
    40,409.34x = 1,750,141,385.35
  5. Step 5: Solve for x
    x = 1,750,141,385.35/40,409.34
  6. Step 6: Final answer
    x = 43,310.32

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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.