Home / 57,018.75-78,683.40-31,176.83

Finding the Fourth Proportional to 57,018.75, 78,683.40 and 31,176.83

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Solution

The fourth proportional to 57,018.75, 78,683.40 and 31,176.83 is: 43,022.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,018.75 : 78,683.40 = 31,176.83 : x
  2. Step 2: Convert to fraction form
    57,018.75/78,683.40 = 31,176.83/x
  3. Step 3: Cross multiply
    57,018.75x = 78,683.40 × 31,176.83
  4. Step 4: Simplify right side
    57,018.75x = 2,453,098,592.21
  5. Step 5: Solve for x
    x = 2,453,098,592.21/57,018.75
  6. Step 6: Final answer
    x = 43,022.67

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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.