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Finding the Fourth Proportional to 72,429.70, 108,647.91 and 37,437.70

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Solution

The fourth proportional to 72,429.70, 108,647.91 and 37,437.70 is: 56,158.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,429.70 : 108,647.91 = 37,437.70 : x
  2. Step 2: Convert to fraction form
    72,429.70/108,647.91 = 37,437.70/x
  3. Step 3: Cross multiply
    72,429.70x = 108,647.91 × 37,437.70
  4. Step 4: Simplify right side
    72,429.70x = 4,067,527,860.21
  5. Step 5: Solve for x
    x = 4,067,527,860.21/72,429.70
  6. Step 6: Final answer
    x = 56,158.29

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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.