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Finding the Fourth Proportional to 89,679.62, 134,427.16 and 39,783.22

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Solution

The fourth proportional to 89,679.62, 134,427.16 and 39,783.22 is: 59,633.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,679.62 : 134,427.16 = 39,783.22 : x
  2. Step 2: Convert to fraction form
    89,679.62/134,427.16 = 39,783.22/x
  3. Step 3: Cross multiply
    89,679.62x = 134,427.16 × 39,783.22
  4. Step 4: Simplify right side
    89,679.62x = 5,347,945,280.26
  5. Step 5: Solve for x
    x = 5,347,945,280.26/89,679.62
  6. Step 6: Final answer
    x = 59,633.90

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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.