Home / 83,750.20-125,430.90-57,311.80

Finding the Fourth Proportional to 83,750.20, 125,430.90 and 57,311.80

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Solution

The fourth proportional to 83,750.20, 125,430.90 and 57,311.80 is: 85,834.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,750.20 : 125,430.90 = 57,311.80 : x
  2. Step 2: Convert to fraction form
    83,750.20/125,430.90 = 57,311.80/x
  3. Step 3: Cross multiply
    83,750.20x = 125,430.90 × 57,311.80
  4. Step 4: Simplify right side
    83,750.20x = 7,188,670,654.62
  5. Step 5: Solve for x
    x = 7,188,670,654.62/83,750.20
  6. Step 6: Final answer
    x = 85,834.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.