Home / 81,269.04-121,908.96-31,349.64

Finding the Fourth Proportional to 81,269.04, 121,908.96 and 31,349.64

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Solution

The fourth proportional to 81,269.04, 121,908.96 and 31,349.64 is: 47,026.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,269.04 : 121,908.96 = 31,349.64 : x
  2. Step 2: Convert to fraction form
    81,269.04/121,908.96 = 31,349.64/x
  3. Step 3: Cross multiply
    81,269.04x = 121,908.96 × 31,349.64
  4. Step 4: Simplify right side
    81,269.04x = 3,821,802,008.77
  5. Step 5: Solve for x
    x = 3,821,802,008.77/81,269.04
  6. Step 6: Final answer
    x = 47,026.54

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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.