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Finding the Fourth Proportional to 55,479.78, 76,501.89 and 35,310.87

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Solution

The fourth proportional to 55,479.78, 76,501.89 and 35,310.87 is: 48,690.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,479.78 : 76,501.89 = 35,310.87 : x
  2. Step 2: Convert to fraction form
    55,479.78/76,501.89 = 35,310.87/x
  3. Step 3: Cross multiply
    55,479.78x = 76,501.89 × 35,310.87
  4. Step 4: Simplify right side
    55,479.78x = 2,701,348,292.54
  5. Step 5: Solve for x
    x = 2,701,348,292.54/55,479.78
  6. Step 6: Final answer
    x = 48,690.68

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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.