Home / 54,911.85-75,782.21-31,038.72

Finding the Fourth Proportional to 54,911.85, 75,782.21 and 31,038.72

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Solution

The fourth proportional to 54,911.85, 75,782.21 and 31,038.72 is: 42,835.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,911.85 : 75,782.21 = 31,038.72 : x
  2. Step 2: Convert to fraction form
    54,911.85/75,782.21 = 31,038.72/x
  3. Step 3: Cross multiply
    54,911.85x = 75,782.21 × 31,038.72
  4. Step 4: Simplify right side
    54,911.85x = 2,352,182,641.98
  5. Step 5: Solve for x
    x = 2,352,182,641.98/54,911.85
  6. Step 6: Final answer
    x = 42,835.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.