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Finding the Fourth Proportional to 145,813.28, 218,720.01 and 40,635.02

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Solution

The fourth proportional to 145,813.28, 218,720.01 and 40,635.02 is: 60,952.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,813.28 : 218,720.01 = 40,635.02 : x
  2. Step 2: Convert to fraction form
    145,813.28/218,720.01 = 40,635.02/x
  3. Step 3: Cross multiply
    145,813.28x = 218,720.01 × 40,635.02
  4. Step 4: Simplify right side
    145,813.28x = 8,887,691,980.75
  5. Step 5: Solve for x
    x = 8,887,691,980.75/145,813.28
  6. Step 6: Final answer
    x = 60,952.56

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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.