Home / 55,380.64-76,431.69-31,511.06

Finding the Fourth Proportional to 55,380.64, 76,431.69 and 31,511.06

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Solution

The fourth proportional to 55,380.64, 76,431.69 and 31,511.06 is: 43,488.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,380.64 : 76,431.69 = 31,511.06 : x
  2. Step 2: Convert to fraction form
    55,380.64/76,431.69 = 31,511.06/x
  3. Step 3: Cross multiply
    55,380.64x = 76,431.69 × 31,511.06
  4. Step 4: Simplify right side
    55,380.64x = 2,408,443,569.49
  5. Step 5: Solve for x
    x = 2,408,443,569.49/55,380.64
  6. Step 6: Final answer
    x = 43,488.91

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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.