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Finding the Fourth Proportional to 89,662.40, 134,493.60 and 30,564.80

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Solution

The fourth proportional to 89,662.40, 134,493.60 and 30,564.80 is: 45,847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,662.40 : 134,493.60 = 30,564.80 : x
  2. Step 2: Convert to fraction form
    89,662.40/134,493.60 = 30,564.80/x
  3. Step 3: Cross multiply
    89,662.40x = 134,493.60 × 30,564.80
  4. Step 4: Simplify right side
    89,662.40x = 4,110,769,985.28
  5. Step 5: Solve for x
    x = 4,110,769,985.28/89,662.40
  6. Step 6: Final answer
    x = 45,847.20

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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.