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Finding the Fourth Proportional to 126,491.60, 189,737.40 and 47,623.52

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Solution

The fourth proportional to 126,491.60, 189,737.40 and 47,623.52 is: 71,435.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,491.60 : 189,737.40 = 47,623.52 : x
  2. Step 2: Convert to fraction form
    126,491.60/189,737.40 = 47,623.52/x
  3. Step 3: Cross multiply
    126,491.60x = 189,737.40 × 47,623.52
  4. Step 4: Simplify right side
    126,491.60x = 9,035,962,863.65
  5. Step 5: Solve for x
    x = 9,035,962,863.65/126,491.60
  6. Step 6: Final answer
    x = 71,435.28

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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.