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Finding the Fourth Proportional to 43,905, 65,857.50 and 12,740.52

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Solution

The fourth proportional to 43,905, 65,857.50 and 12,740.52 is: 19,110.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,905 : 65,857.50 = 12,740.52 : x
  2. Step 2: Convert to fraction form
    43,905/65,857.50 = 12,740.52/x
  3. Step 3: Cross multiply
    43,905x = 65,857.50 × 12,740.52
  4. Step 4: Simplify right side
    43,905x = 839,058,795.90
  5. Step 5: Solve for x
    x = 839,058,795.90/43,905
  6. Step 6: Final answer
    x = 19,110.78

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.