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Finding the Fourth Proportional to 43,928, 65,957.62 and 43,271.90

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Solution

The fourth proportional to 43,928, 65,957.62 and 43,271.90 is: 64,972.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,928 : 65,957.62 = 43,271.90 : x
  2. Step 2: Convert to fraction form
    43,928/65,957.62 = 43,271.90/x
  3. Step 3: Cross multiply
    43,928x = 65,957.62 × 43,271.90
  4. Step 4: Simplify right side
    43,928x = 2,854,111,536.88
  5. Step 5: Solve for x
    x = 2,854,111,536.88/43,928
  6. Step 6: Final answer
    x = 64,972.49

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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.