Home / 47,705.61-71,550.31-12,648.81

Finding the Fourth Proportional to 47,705.61, 71,550.31 and 12,648.81

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Solution

The fourth proportional to 47,705.61, 71,550.31 and 12,648.81 is: 18,971.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,705.61 : 71,550.31 = 12,648.81 : x
  2. Step 2: Convert to fraction form
    47,705.61/71,550.31 = 12,648.81/x
  3. Step 3: Cross multiply
    47,705.61x = 71,550.31 × 12,648.81
  4. Step 4: Simplify right side
    47,705.61x = 905,025,887.26
  5. Step 5: Solve for x
    x = 905,025,887.26/47,705.61
  6. Step 6: Final answer
    x = 18,971.06

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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.