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Finding the Fourth Proportional to 52,638.84, 72,641.42 and 28,765.66

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Solution

The fourth proportional to 52,638.84, 72,641.42 and 28,765.66 is: 39,696.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,638.84 : 72,641.42 = 28,765.66 : x
  2. Step 2: Convert to fraction form
    52,638.84/72,641.42 = 28,765.66/x
  3. Step 3: Cross multiply
    52,638.84x = 72,641.42 × 28,765.66
  4. Step 4: Simplify right side
    52,638.84x = 2,089,578,389.64
  5. Step 5: Solve for x
    x = 2,089,578,389.64/52,638.84
  6. Step 6: Final answer
    x = 39,696.51

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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.