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Finding the Fourth Proportional to 55,697.80, 76,862.08 and 30,203.64

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Solution

The fourth proportional to 55,697.80, 76,862.08 and 30,203.64 is: 41,680.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,697.80 : 76,862.08 = 30,203.64 : x
  2. Step 2: Convert to fraction form
    55,697.80/76,862.08 = 30,203.64/x
  3. Step 3: Cross multiply
    55,697.80x = 76,862.08 × 30,203.64
  4. Step 4: Simplify right side
    55,697.80x = 2,321,514,593.97
  5. Step 5: Solve for x
    x = 2,321,514,593.97/55,697.80
  6. Step 6: Final answer
    x = 41,680.54

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1.5x scale

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.