Home / 55,278.50-76,284.26-30,128

Finding the Fourth Proportional to 55,278.50, 76,284.26 and 30,128

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Solution

The fourth proportional to 55,278.50, 76,284.26 and 30,128 is: 41,576.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,278.50 : 76,284.26 = 30,128 : x
  2. Step 2: Convert to fraction form
    55,278.50/76,284.26 = 30,128/x
  3. Step 3: Cross multiply
    55,278.50x = 76,284.26 × 30,128
  4. Step 4: Simplify right side
    55,278.50x = 2,298,292,185.28
  5. Step 5: Solve for x
    x = 2,298,292,185.28/55,278.50
  6. Step 6: Final answer
    x = 41,576.60

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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.