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Finding the Fourth Proportional to 71,532.84, 98,715.30 and 39,701.72

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Solution

The fourth proportional to 71,532.84, 98,715.30 and 39,701.72 is: 54,788.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,532.84 : 98,715.30 = 39,701.72 : x
  2. Step 2: Convert to fraction form
    71,532.84/98,715.30 = 39,701.72/x
  3. Step 3: Cross multiply
    71,532.84x = 98,715.30 × 39,701.72
  4. Step 4: Simplify right side
    71,532.84x = 3,919,167,200.32
  5. Step 5: Solve for x
    x = 3,919,167,200.32/71,532.84
  6. Step 6: Final answer
    x = 54,788.36

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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.