Home / 81,457.44-121,964.40-61,676.16

Finding the Fourth Proportional to 81,457.44, 121,964.40 and 61,676.16

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Solution

The fourth proportional to 81,457.44, 121,964.40 and 61,676.16 is: 92,346.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,457.44 : 121,964.40 = 61,676.16 : x
  2. Step 2: Convert to fraction form
    81,457.44/121,964.40 = 61,676.16/x
  3. Step 3: Cross multiply
    81,457.44x = 121,964.40 × 61,676.16
  4. Step 4: Simplify right side
    81,457.44x = 7,522,295,848.70
  5. Step 5: Solve for x
    x = 7,522,295,848.70/81,457.44
  6. Step 6: Final answer
    x = 92,346.33

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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.