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Finding the Fourth Proportional to 89,130.72, 122,974.02 and 50,889

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Solution

The fourth proportional to 89,130.72, 122,974.02 and 50,889 is: 70,211.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,130.72 : 122,974.02 = 50,889 : x
  2. Step 2: Convert to fraction form
    89,130.72/122,974.02 = 50,889/x
  3. Step 3: Cross multiply
    89,130.72x = 122,974.02 × 50,889
  4. Step 4: Simplify right side
    89,130.72x = 6,258,024,903.78
  5. Step 5: Solve for x
    x = 6,258,024,903.78/89,130.72
  6. Step 6: Final answer
    x = 70,211.76

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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.