Home / 54,986.90-75,881.93-31,113.09

Finding the Fourth Proportional to 54,986.90, 75,881.93 and 31,113.09

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Solution

The fourth proportional to 54,986.90, 75,881.93 and 31,113.09 is: 42,936.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,986.90 : 75,881.93 = 31,113.09 : x
  2. Step 2: Convert to fraction form
    54,986.90/75,881.93 = 31,113.09/x
  3. Step 3: Cross multiply
    54,986.90x = 75,881.93 × 31,113.09
  4. Step 4: Simplify right side
    54,986.90x = 2,360,921,161.90
  5. Step 5: Solve for x
    x = 2,360,921,161.90/54,986.90
  6. Step 6: Final answer
    x = 42,936.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.