Home / 55,156.10-76,118.36-31,290.44

Finding the Fourth Proportional to 55,156.10, 76,118.36 and 31,290.44

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Solution

The fourth proportional to 55,156.10, 76,118.36 and 31,290.44 is: 43,182.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,156.10 : 76,118.36 = 31,290.44 : x
  2. Step 2: Convert to fraction form
    55,156.10/76,118.36 = 31,290.44/x
  3. Step 3: Cross multiply
    55,156.10x = 76,118.36 × 31,290.44
  4. Step 4: Simplify right side
    55,156.10x = 2,381,776,439.43
  5. Step 5: Solve for x
    x = 2,381,776,439.43/55,156.10
  6. Step 6: Final answer
    x = 43,182.47

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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.