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Finding the Fourth Proportional to 39,113.44, 53,975.12 and 21,208.16

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Solution

The fourth proportional to 39,113.44, 53,975.12 and 21,208.16 is: 29,266.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,113.44 : 53,975.12 = 21,208.16 : x
  2. Step 2: Convert to fraction form
    39,113.44/53,975.12 = 21,208.16/x
  3. Step 3: Cross multiply
    39,113.44x = 53,975.12 × 21,208.16
  4. Step 4: Simplify right side
    39,113.44x = 1,144,712,980.98
  5. Step 5: Solve for x
    x = 1,144,712,980.98/39,113.44
  6. Step 6: Final answer
    x = 29,266.49

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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.