Home / 55,150.40-76,121.08-31,291.04

Finding the Fourth Proportional to 55,150.40, 76,121.08 and 31,291.04

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Solution

The fourth proportional to 55,150.40, 76,121.08 and 31,291.04 is: 43,189.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,150.40 : 76,121.08 = 31,291.04 : x
  2. Step 2: Convert to fraction form
    55,150.40/76,121.08 = 31,291.04/x
  3. Step 3: Cross multiply
    55,150.40x = 76,121.08 × 31,291.04
  4. Step 4: Simplify right side
    55,150.40x = 2,381,907,759.12
  5. Step 5: Solve for x
    x = 2,381,907,759.12/55,150.40
  6. Step 6: Final answer
    x = 43,189.31

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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.