Home / 40,005.89-55,204.40-25,640.36

Finding the Fourth Proportional to 40,005.89, 55,204.40 and 25,640.36

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Solution

The fourth proportional to 40,005.89, 55,204.40 and 25,640.36 is: 35,381.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,005.89 : 55,204.40 = 25,640.36 : x
  2. Step 2: Convert to fraction form
    40,005.89/55,204.40 = 25,640.36/x
  3. Step 3: Cross multiply
    40,005.89x = 55,204.40 × 25,640.36
  4. Step 4: Simplify right side
    40,005.89x = 1,415,460,561.38
  5. Step 5: Solve for x
    x = 1,415,460,561.38/40,005.89
  6. Step 6: Final answer
    x = 35,381.30

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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.