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Finding the Fourth Proportional to 55,339.64, 76,370.84 and 31,468.48

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Solution

The fourth proportional to 55,339.64, 76,370.84 and 31,468.48 is: 43,427.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,339.64 : 76,370.84 = 31,468.48 : x
  2. Step 2: Convert to fraction form
    55,339.64/76,370.84 = 31,468.48/x
  3. Step 3: Cross multiply
    55,339.64x = 76,370.84 × 31,468.48
  4. Step 4: Simplify right side
    55,339.64x = 2,403,274,251.12
  5. Step 5: Solve for x
    x = 2,403,274,251.12/55,339.64
  6. Step 6: Final answer
    x = 43,427.72

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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.