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Finding the Fourth Proportional to 89,061.56, 133,592.34 and 39,779

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Solution

The fourth proportional to 89,061.56, 133,592.34 and 39,779 is: 59,668.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,061.56 : 133,592.34 = 39,779 : x
  2. Step 2: Convert to fraction form
    89,061.56/133,592.34 = 39,779/x
  3. Step 3: Cross multiply
    89,061.56x = 133,592.34 × 39,779
  4. Step 4: Simplify right side
    89,061.56x = 5,314,169,692.86
  5. Step 5: Solve for x
    x = 5,314,169,692.86/89,061.56
  6. Step 6: Final answer
    x = 59,668.50

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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.