Home / 72,579.61-100,157.29-40,749.85

Finding the Fourth Proportional to 72,579.61, 100,157.29 and 40,749.85

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Solution

The fourth proportional to 72,579.61, 100,157.29 and 40,749.85 is: 56,233.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579.61 : 100,157.29 = 40,749.85 : x
  2. Step 2: Convert to fraction form
    72,579.61/100,157.29 = 40,749.85/x
  3. Step 3: Cross multiply
    72,579.61x = 100,157.29 × 40,749.85
  4. Step 4: Simplify right side
    72,579.61x = 4,081,394,720.04
  5. Step 5: Solve for x
    x = 4,081,394,720.04/72,579.61
  6. Step 6: Final answer
    x = 56,233.35

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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.