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Finding the Fourth Proportional to 72,045.40, 107,994.26 and 29,949.90

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Solution

The fourth proportional to 72,045.40, 107,994.26 and 29,949.90 is: 44,894.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,045.40 : 107,994.26 = 29,949.90 : x
  2. Step 2: Convert to fraction form
    72,045.40/107,994.26 = 29,949.90/x
  3. Step 3: Cross multiply
    72,045.40x = 107,994.26 × 29,949.90
  4. Step 4: Simplify right side
    72,045.40x = 3,234,417,564.94
  5. Step 5: Solve for x
    x = 3,234,417,564.94/72,045.40
  6. Step 6: Final answer
    x = 44,894.16

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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.