Home / 72,439.35-99,987.12-43,754.45

Finding the Fourth Proportional to 72,439.35, 99,987.12 and 43,754.45

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Solution

The fourth proportional to 72,439.35, 99,987.12 and 43,754.45 is: 60,393.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,439.35 : 99,987.12 = 43,754.45 : x
  2. Step 2: Convert to fraction form
    72,439.35/99,987.12 = 43,754.45/x
  3. Step 3: Cross multiply
    72,439.35x = 99,987.12 × 43,754.45
  4. Step 4: Simplify right side
    72,439.35x = 4,374,880,942.75
  5. Step 5: Solve for x
    x = 4,374,880,942.75/72,439.35
  6. Step 6: Final answer
    x = 60,393.71

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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.