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Finding the Fourth Proportional to 70,748.76, 97,631.70 and 38,916.96

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Solution

The fourth proportional to 70,748.76, 97,631.70 and 38,916.96 is: 53,704.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,748.76 : 97,631.70 = 38,916.96 : x
  2. Step 2: Convert to fraction form
    70,748.76/97,631.70 = 38,916.96/x
  3. Step 3: Cross multiply
    70,748.76x = 97,631.70 × 38,916.96
  4. Step 4: Simplify right side
    70,748.76x = 3,799,528,963.63
  5. Step 5: Solve for x
    x = 3,799,528,963.63/70,748.76
  6. Step 6: Final answer
    x = 53,704.53

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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.