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Finding the Fourth Proportional to 126,607.60, 189,792.60 and 47,774.80

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Solution

The fourth proportional to 126,607.60, 189,792.60 and 47,774.80 is: 71,617.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,607.60 : 189,792.60 = 47,774.80 : x
  2. Step 2: Convert to fraction form
    126,607.60/189,792.60 = 47,774.80/x
  3. Step 3: Cross multiply
    126,607.60x = 189,792.60 × 47,774.80
  4. Step 4: Simplify right side
    126,607.60x = 9,067,303,506.48
  5. Step 5: Solve for x
    x = 9,067,303,506.48/126,607.60
  6. Step 6: Final answer
    x = 71,617.37

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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.