Home / 83,913.08-115,741.08-55,223.60

Finding the Fourth Proportional to 83,913.08, 115,741.08 and 55,223.60

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Solution

The fourth proportional to 83,913.08, 115,741.08 and 55,223.60 is: 76,169.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,913.08 : 115,741.08 = 55,223.60 : x
  2. Step 2: Convert to fraction form
    83,913.08/115,741.08 = 55,223.60/x
  3. Step 3: Cross multiply
    83,913.08x = 115,741.08 × 55,223.60
  4. Step 4: Simplify right side
    83,913.08x = 6,391,638,526.78
  5. Step 5: Solve for x
    x = 6,391,638,526.78/83,913.08
  6. Step 6: Final answer
    x = 76,169.76

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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.