Home / 81,547.04-122,351.69-31,662.16

Finding the Fourth Proportional to 81,547.04, 122,351.69 and 31,662.16

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Solution

The fourth proportional to 81,547.04, 122,351.69 and 31,662.16 is: 47,505.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,547.04 : 122,351.69 = 31,662.16 : x
  2. Step 2: Convert to fraction form
    81,547.04/122,351.69 = 31,662.16/x
  3. Step 3: Cross multiply
    81,547.04x = 122,351.69 × 31,662.16
  4. Step 4: Simplify right side
    81,547.04x = 3,873,918,785.05
  5. Step 5: Solve for x
    x = 3,873,918,785.05/81,547.04
  6. Step 6: Final answer
    x = 47,505.33

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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.