Home / 74,380.44-102,643.27-40,389.01

Finding the Fourth Proportional to 74,380.44, 102,643.27 and 40,389.01

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Solution

The fourth proportional to 74,380.44, 102,643.27 and 40,389.01 is: 55,735.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,380.44 : 102,643.27 = 40,389.01 : x
  2. Step 2: Convert to fraction form
    74,380.44/102,643.27 = 40,389.01/x
  3. Step 3: Cross multiply
    74,380.44x = 102,643.27 × 40,389.01
  4. Step 4: Simplify right side
    74,380.44x = 4,145,660,058.46
  5. Step 5: Solve for x
    x = 4,145,660,058.46/74,380.44
  6. Step 6: Final answer
    x = 55,735.89

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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.