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Finding the Fourth Proportional to 85,925.75, 128,846.95 and 50,398.67

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Solution

The fourth proportional to 85,925.75, 128,846.95 and 50,398.67 is: 75,573.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,925.75 : 128,846.95 = 50,398.67 : x
  2. Step 2: Convert to fraction form
    85,925.75/128,846.95 = 50,398.67/x
  3. Step 3: Cross multiply
    85,925.75x = 128,846.95 × 50,398.67
  4. Step 4: Simplify right side
    85,925.75x = 6,493,715,109.68
  5. Step 5: Solve for x
    x = 6,493,715,109.68/85,925.75
  6. Step 6: Final answer
    x = 75,573.57

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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.