Home / 54,685.36-81,971.16-39,656.08

Finding the Fourth Proportional to 54,685.36, 81,971.16 and 39,656.08

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Solution

The fourth proportional to 54,685.36, 81,971.16 and 39,656.08 is: 59,442.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,685.36 : 81,971.16 = 39,656.08 : x
  2. Step 2: Convert to fraction form
    54,685.36/81,971.16 = 39,656.08/x
  3. Step 3: Cross multiply
    54,685.36x = 81,971.16 × 39,656.08
  4. Step 4: Simplify right side
    54,685.36x = 3,250,654,878.65
  5. Step 5: Solve for x
    x = 3,250,654,878.65/54,685.36
  6. Step 6: Final answer
    x = 59,442.87

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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.