Home / 57,019.74-78,685.25-31,178.89

Finding the Fourth Proportional to 57,019.74, 78,685.25 and 31,178.89

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Solution

The fourth proportional to 57,019.74, 78,685.25 and 31,178.89 is: 43,025.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,019.74 : 78,685.25 = 31,178.89 : x
  2. Step 2: Convert to fraction form
    57,019.74/78,685.25 = 31,178.89/x
  3. Step 3: Cross multiply
    57,019.74x = 78,685.25 × 31,178.89
  4. Step 4: Simplify right side
    57,019.74x = 2,453,318,634.21
  5. Step 5: Solve for x
    x = 2,453,318,634.21/57,019.74
  6. Step 6: Final answer
    x = 43,025.78

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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.