Home / 71,840.36-99,142.77-40,009.25

Finding the Fourth Proportional to 71,840.36, 99,142.77 and 40,009.25

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Solution

The fourth proportional to 71,840.36, 99,142.77 and 40,009.25 is: 55,214.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,840.36 : 99,142.77 = 40,009.25 : x
  2. Step 2: Convert to fraction form
    71,840.36/99,142.77 = 40,009.25/x
  3. Step 3: Cross multiply
    71,840.36x = 99,142.77 × 40,009.25
  4. Step 4: Simplify right side
    71,840.36x = 3,966,628,098.49
  5. Step 5: Solve for x
    x = 3,966,628,098.49/71,840.36
  6. Step 6: Final answer
    x = 55,214.48

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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.