Home / 55,158.21-76,116.11-31,284.36

Finding the Fourth Proportional to 55,158.21, 76,116.11 and 31,284.36

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Solution

The fourth proportional to 55,158.21, 76,116.11 and 31,284.36 is: 43,171.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,158.21 : 76,116.11 = 31,284.36 : x
  2. Step 2: Convert to fraction form
    55,158.21/76,116.11 = 31,284.36/x
  3. Step 3: Cross multiply
    55,158.21x = 76,116.11 × 31,284.36
  4. Step 4: Simplify right side
    55,158.21x = 2,381,243,630.62
  5. Step 5: Solve for x
    x = 2,381,243,630.62/55,158.21
  6. Step 6: Final answer
    x = 43,171.15

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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.