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Finding the Fourth Proportional to 45,399, 62,658.90 and 43,406.40

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Solution

The fourth proportional to 45,399, 62,658.90 and 43,406.40 is: 59,908.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,399 : 62,658.90 = 43,406.40 : x
  2. Step 2: Convert to fraction form
    45,399/62,658.90 = 43,406.40/x
  3. Step 3: Cross multiply
    45,399x = 62,658.90 × 43,406.40
  4. Step 4: Simplify right side
    45,399x = 2,719,797,276.96
  5. Step 5: Solve for x
    x = 2,719,797,276.96/45,399
  6. Step 6: Final answer
    x = 59,908.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.