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Finding the Fourth Proportional to 54,345.40, 74,971.14 and 38,438.62

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Solution

The fourth proportional to 54,345.40, 74,971.14 and 38,438.62 is: 53,027.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,345.40 : 74,971.14 = 38,438.62 : x
  2. Step 2: Convert to fraction form
    54,345.40/74,971.14 = 38,438.62/x
  3. Step 3: Cross multiply
    54,345.40x = 74,971.14 × 38,438.62
  4. Step 4: Simplify right side
    54,345.40x = 2,881,787,161.43
  5. Step 5: Solve for x
    x = 2,881,787,161.43/54,345.40
  6. Step 6: Final answer
    x = 53,027.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.