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Finding the Fourth Proportional to 55,843.42, 77,064.52 and 30,349.78

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Solution

The fourth proportional to 55,843.42, 77,064.52 and 30,349.78 is: 41,883.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,843.42 : 77,064.52 = 30,349.78 : x
  2. Step 2: Convert to fraction form
    55,843.42/77,064.52 = 30,349.78/x
  3. Step 3: Cross multiply
    55,843.42x = 77,064.52 × 30,349.78
  4. Step 4: Simplify right side
    55,843.42x = 2,338,891,402.99
  5. Step 5: Solve for x
    x = 2,338,891,402.99/55,843.42
  6. Step 6: Final answer
    x = 41,883.03

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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.