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Finding the Fourth Proportional to 97,780.28, 134,936.76 and 53,068.28

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Solution

The fourth proportional to 97,780.28, 134,936.76 and 53,068.28 is: 73,234.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,780.28 : 134,936.76 = 53,068.28 : x
  2. Step 2: Convert to fraction form
    97,780.28/134,936.76 = 53,068.28/x
  3. Step 3: Cross multiply
    97,780.28x = 134,936.76 × 53,068.28
  4. Step 4: Simplify right side
    97,780.28x = 7,160,861,761.97
  5. Step 5: Solve for x
    x = 7,160,861,761.97/97,780.28
  6. Step 6: Final answer
    x = 73,234.21

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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.