Home / 57,073.48-78,763.72-31,579.40

Finding the Fourth Proportional to 57,073.48, 78,763.72 and 31,579.40

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Solution

The fourth proportional to 57,073.48, 78,763.72 and 31,579.40 is: 43,580.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,073.48 : 78,763.72 = 31,579.40 : x
  2. Step 2: Convert to fraction form
    57,073.48/78,763.72 = 31,579.40/x
  3. Step 3: Cross multiply
    57,073.48x = 78,763.72 × 31,579.40
  4. Step 4: Simplify right side
    57,073.48x = 2,487,311,019.37
  5. Step 5: Solve for x
    x = 2,487,311,019.37/57,073.48
  6. Step 6: Final answer
    x = 43,580.85

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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.