Home / 54,980.14-82,478.28-19,911.58

Finding the Fourth Proportional to 54,980.14, 82,478.28 and 19,911.58

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Solution

The fourth proportional to 54,980.14, 82,478.28 and 19,911.58 is: 29,870.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,980.14 : 82,478.28 = 19,911.58 : x
  2. Step 2: Convert to fraction form
    54,980.14/82,478.28 = 19,911.58/x
  3. Step 3: Cross multiply
    54,980.14x = 82,478.28 × 19,911.58
  4. Step 4: Simplify right side
    54,980.14x = 1,642,272,870.48
  5. Step 5: Solve for x
    x = 1,642,272,870.48/54,980.14
  6. Step 6: Final answer
    x = 29,870.29

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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.