Home / 84,078.18-115,962.28-53,866.31

Finding the Fourth Proportional to 84,078.18, 115,962.28 and 53,866.31

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Solution

The fourth proportional to 84,078.18, 115,962.28 and 53,866.31 is: 74,293.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,078.18 : 115,962.28 = 53,866.31 : x
  2. Step 2: Convert to fraction form
    84,078.18/115,962.28 = 53,866.31/x
  3. Step 3: Cross multiply
    84,078.18x = 115,962.28 × 53,866.31
  4. Step 4: Simplify right side
    84,078.18x = 6,246,460,122.79
  5. Step 5: Solve for x
    x = 6,246,460,122.79/84,078.18
  6. Step 6: Final answer
    x = 74,293.47

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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.