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Finding the Fourth Proportional to 72,344.80, 108,430.80 and 37,266.40

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Solution

The fourth proportional to 72,344.80, 108,430.80 and 37,266.40 is: 55,855.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,344.80 : 108,430.80 = 37,266.40 : x
  2. Step 2: Convert to fraction form
    72,344.80/108,430.80 = 37,266.40/x
  3. Step 3: Cross multiply
    72,344.80x = 108,430.80 × 37,266.40
  4. Step 4: Simplify right side
    72,344.80x = 4,040,825,565.12
  5. Step 5: Solve for x
    x = 4,040,825,565.12/72,344.80
  6. Step 6: Final answer
    x = 55,855.09

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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.