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Finding the Fourth Proportional to 104,072.60, 156,211.30 and 51,541.40

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Solution

The fourth proportional to 104,072.60, 156,211.30 and 51,541.40 is: 77,362.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,072.60 : 156,211.30 = 51,541.40 : x
  2. Step 2: Convert to fraction form
    104,072.60/156,211.30 = 51,541.40/x
  3. Step 3: Cross multiply
    104,072.60x = 156,211.30 × 51,541.40
  4. Step 4: Simplify right side
    104,072.60x = 8,051,349,097.82
  5. Step 5: Solve for x
    x = 8,051,349,097.82/104,072.60
  6. Step 6: Final answer
    x = 77,362.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.