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Finding the Fourth Proportional to 65,660.73, 98,476.70 and 18,903.45

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Solution

The fourth proportional to 65,660.73, 98,476.70 and 18,903.45 is: 28,351.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,660.73 : 98,476.70 = 18,903.45 : x
  2. Step 2: Convert to fraction form
    65,660.73/98,476.70 = 18,903.45/x
  3. Step 3: Cross multiply
    65,660.73x = 98,476.70 × 18,903.45
  4. Step 4: Simplify right side
    65,660.73x = 1,861,549,280.10
  5. Step 5: Solve for x
    x = 1,861,549,280.10/65,660.73
  6. Step 6: Final answer
    x = 28,351.03

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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.