Home / 81,271.10-121,858.05-41,905.10

Finding the Fourth Proportional to 81,271.10, 121,858.05 and 41,905.10

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Solution

The fourth proportional to 81,271.10, 121,858.05 and 41,905.10 is: 62,832.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,271.10 : 121,858.05 = 41,905.10 : x
  2. Step 2: Convert to fraction form
    81,271.10/121,858.05 = 41,905.10/x
  3. Step 3: Cross multiply
    81,271.10x = 121,858.05 × 41,905.10
  4. Step 4: Simplify right side
    81,271.10x = 5,106,473,771.06
  5. Step 5: Solve for x
    x = 5,106,473,771.06/81,271.10
  6. Step 6: Final answer
    x = 62,832.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.