Home / 55,131.84-76,080.16-31,260.64

Finding the Fourth Proportional to 55,131.84, 76,080.16 and 31,260.64

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Solution

The fourth proportional to 55,131.84, 76,080.16 and 31,260.64 is: 43,138.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,131.84 : 76,080.16 = 31,260.64 : x
  2. Step 2: Convert to fraction form
    55,131.84/76,080.16 = 31,260.64/x
  3. Step 3: Cross multiply
    55,131.84x = 76,080.16 × 31,260.64
  4. Step 4: Simplify right side
    55,131.84x = 2,378,314,492.90
  5. Step 5: Solve for x
    x = 2,378,314,492.90/55,131.84
  6. Step 6: Final answer
    x = 43,138.67

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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.