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Finding the Fourth Proportional to 58,858.08, 81,168.16 and 38,732

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Solution

The fourth proportional to 58,858.08, 81,168.16 and 38,732 is: 53,413.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,858.08 : 81,168.16 = 38,732 : x
  2. Step 2: Convert to fraction form
    58,858.08/81,168.16 = 38,732/x
  3. Step 3: Cross multiply
    58,858.08x = 81,168.16 × 38,732
  4. Step 4: Simplify right side
    58,858.08x = 3,143,805,173.12
  5. Step 5: Solve for x
    x = 3,143,805,173.12/58,858.08
  6. Step 6: Final answer
    x = 53,413.32

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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.