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Finding the Fourth Proportional to 64,937.40, 97,399.60 and 18,190.68

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Solution

The fourth proportional to 64,937.40, 97,399.60 and 18,190.68 is: 27,284.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,937.40 : 97,399.60 = 18,190.68 : x
  2. Step 2: Convert to fraction form
    64,937.40/97,399.60 = 18,190.68/x
  3. Step 3: Cross multiply
    64,937.40x = 97,399.60 × 18,190.68
  4. Step 4: Simplify right side
    64,937.40x = 1,771,764,955.73
  5. Step 5: Solve for x
    x = 1,771,764,955.73/64,937.40
  6. Step 6: Final answer
    x = 27,284.20

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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.