Home / 55,274.12-76,274.64-31,078.80

Finding the Fourth Proportional to 55,274.12, 76,274.64 and 31,078.80

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Solution

The fourth proportional to 55,274.12, 76,274.64 and 31,078.80 is: 42,886.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,274.12 : 76,274.64 = 31,078.80 : x
  2. Step 2: Convert to fraction form
    55,274.12/76,274.64 = 31,078.80/x
  3. Step 3: Cross multiply
    55,274.12x = 76,274.64 × 31,078.80
  4. Step 4: Simplify right side
    55,274.12x = 2,370,524,281.63
  5. Step 5: Solve for x
    x = 2,370,524,281.63/55,274.12
  6. Step 6: Final answer
    x = 42,886.69

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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.