Home / 55,120.05-76,064.67-31,246.20

Finding the Fourth Proportional to 55,120.05, 76,064.67 and 31,246.20

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Solution

The fourth proportional to 55,120.05, 76,064.67 and 31,246.20 is: 43,119.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,120.05 : 76,064.67 = 31,246.20 : x
  2. Step 2: Convert to fraction form
    55,120.05/76,064.67 = 31,246.20/x
  3. Step 3: Cross multiply
    55,120.05x = 76,064.67 × 31,246.20
  4. Step 4: Simplify right side
    55,120.05x = 2,376,731,891.75
  5. Step 5: Solve for x
    x = 2,376,731,891.75/55,120.05
  6. Step 6: Final answer
    x = 43,119.19

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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.