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Finding the Fourth Proportional to 72,379.88, 108,482.28 and 37,300.40

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Solution

The fourth proportional to 72,379.88, 108,482.28 and 37,300.40 is: 55,905.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,379.88 : 108,482.28 = 37,300.40 : x
  2. Step 2: Convert to fraction form
    72,379.88/108,482.28 = 37,300.40/x
  3. Step 3: Cross multiply
    72,379.88x = 108,482.28 × 37,300.40
  4. Step 4: Simplify right side
    72,379.88x = 4,046,432,436.91
  5. Step 5: Solve for x
    x = 4,046,432,436.91/72,379.88
  6. Step 6: Final answer
    x = 55,905.49

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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.