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Finding the Fourth Proportional to 78,586.60, 117,880.98 and 22,426.68

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Solution

The fourth proportional to 78,586.60, 117,880.98 and 22,426.68 is: 33,640.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,586.60 : 117,880.98 = 22,426.68 : x
  2. Step 2: Convert to fraction form
    78,586.60/117,880.98 = 22,426.68/x
  3. Step 3: Cross multiply
    78,586.60x = 117,880.98 × 22,426.68
  4. Step 4: Simplify right side
    78,586.60x = 2,643,679,016.55
  5. Step 5: Solve for x
    x = 2,643,679,016.55/78,586.60
  6. Step 6: Final answer
    x = 33,640.33

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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.