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Finding the Fourth Proportional to 69,407.76, 104,544 and 64,541.28

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Solution

The fourth proportional to 69,407.76, 104,544 and 64,541.28 is: 97,213.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,407.76 : 104,544 = 64,541.28 : x
  2. Step 2: Convert to fraction form
    69,407.76/104,544 = 64,541.28/x
  3. Step 3: Cross multiply
    69,407.76x = 104,544 × 64,541.28
  4. Step 4: Simplify right side
    69,407.76x = 6,747,403,576.32
  5. Step 5: Solve for x
    x = 6,747,403,576.32/69,407.76
  6. Step 6: Final answer
    x = 97,213.97

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.