Home / 88,138.37-121,638.48-49,904.66

Finding the Fourth Proportional to 88,138.37, 121,638.48 and 49,904.66

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Solution

The fourth proportional to 88,138.37, 121,638.48 and 49,904.66 is: 68,872.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,138.37 : 121,638.48 = 49,904.66 : x
  2. Step 2: Convert to fraction form
    88,138.37/121,638.48 = 49,904.66/x
  3. Step 3: Cross multiply
    88,138.37x = 121,638.48 × 49,904.66
  4. Step 4: Simplify right side
    88,138.37x = 6,070,326,987.32
  5. Step 5: Solve for x
    x = 6,070,326,987.32/88,138.37
  6. Step 6: Final answer
    x = 68,872.69

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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.