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Finding the Fourth Proportional to 72,450.45, 99,967.77 and 43,764.30

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Solution

The fourth proportional to 72,450.45, 99,967.77 and 43,764.30 is: 60,386.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,450.45 : 99,967.77 = 43,764.30 : x
  2. Step 2: Convert to fraction form
    72,450.45/99,967.77 = 43,764.30/x
  3. Step 3: Cross multiply
    72,450.45x = 99,967.77 × 43,764.30
  4. Step 4: Simplify right side
    72,450.45x = 4,375,019,476.61
  5. Step 5: Solve for x
    x = 4,375,019,476.61/72,450.45
  6. Step 6: Final answer
    x = 60,386.37

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1.5x scale

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.