Home / 90,078.80-124,308.77-49,243.11

Finding the Fourth Proportional to 90,078.80, 124,308.77 and 49,243.11

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Solution

The fourth proportional to 90,078.80, 124,308.77 and 49,243.11 is: 67,955.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,078.80 : 124,308.77 = 49,243.11 : x
  2. Step 2: Convert to fraction form
    90,078.80/124,308.77 = 49,243.11/x
  3. Step 3: Cross multiply
    90,078.80x = 124,308.77 × 49,243.11
  4. Step 4: Simplify right side
    90,078.80x = 6,121,350,435.07
  5. Step 5: Solve for x
    x = 6,121,350,435.07/90,078.80
  6. Step 6: Final answer
    x = 67,955.51

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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.