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Finding the Fourth Proportional to 43,254, 64,881 and 12,090.60

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Solution

The fourth proportional to 43,254, 64,881 and 12,090.60 is: 18,135.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,254 : 64,881 = 12,090.60 : x
  2. Step 2: Convert to fraction form
    43,254/64,881 = 12,090.60/x
  3. Step 3: Cross multiply
    43,254x = 64,881 × 12,090.60
  4. Step 4: Simplify right side
    43,254x = 784,450,218.60
  5. Step 5: Solve for x
    x = 784,450,218.60/43,254
  6. Step 6: Final answer
    x = 18,135.90

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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.