Home / 55,186.95-76,155.74-31,313.11

Finding the Fourth Proportional to 55,186.95, 76,155.74 and 31,313.11

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Solution

The fourth proportional to 55,186.95, 76,155.74 and 31,313.11 is: 43,210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,186.95 : 76,155.74 = 31,313.11 : x
  2. Step 2: Convert to fraction form
    55,186.95/76,155.74 = 31,313.11/x
  3. Step 3: Cross multiply
    55,186.95x = 76,155.74 × 31,313.11
  4. Step 4: Simplify right side
    55,186.95x = 2,384,673,063.75
  5. Step 5: Solve for x
    x = 2,384,673,063.75/55,186.95
  6. Step 6: Final answer
    x = 43,210.81

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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.