Home / 55,155.37-76,116.12-31,283.05

Finding the Fourth Proportional to 55,155.37, 76,116.12 and 31,283.05

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Solution

The fourth proportional to 55,155.37, 76,116.12 and 31,283.05 is: 43,171.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,155.37 : 76,116.12 = 31,283.05 : x
  2. Step 2: Convert to fraction form
    55,155.37/76,116.12 = 31,283.05/x
  3. Step 3: Cross multiply
    55,155.37x = 76,116.12 × 31,283.05
  4. Step 4: Simplify right side
    55,155.37x = 2,381,143,850.77
  5. Step 5: Solve for x
    x = 2,381,143,850.77/55,155.37
  6. Step 6: Final answer
    x = 43,171.57

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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.