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Finding the Fourth Proportional to 79,626.40, 119,439.60 and 71,024.80

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Solution

The fourth proportional to 79,626.40, 119,439.60 and 71,024.80 is: 106,537.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,626.40 : 119,439.60 = 71,024.80 : x
  2. Step 2: Convert to fraction form
    79,626.40/119,439.60 = 71,024.80/x
  3. Step 3: Cross multiply
    79,626.40x = 119,439.60 × 71,024.80
  4. Step 4: Simplify right side
    79,626.40x = 8,483,173,702.08
  5. Step 5: Solve for x
    x = 8,483,173,702.08/79,626.40
  6. Step 6: Final answer
    x = 106,537.20

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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.