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Finding the Fourth Proportional to 104,570, 156,766.80 and 45,361.10

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Solution

The fourth proportional to 104,570, 156,766.80 and 45,361.10 is: 68,003.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,570 : 156,766.80 = 45,361.10 : x
  2. Step 2: Convert to fraction form
    104,570/156,766.80 = 45,361.10/x
  3. Step 3: Cross multiply
    104,570x = 156,766.80 × 45,361.10
  4. Step 4: Simplify right side
    104,570x = 7,111,114,491.48
  5. Step 5: Solve for x
    x = 7,111,114,491.48/104,570
  6. Step 6: Final answer
    x = 68,003.39

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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.