Home / 53,439.36-73,741.92-30,777.12

Finding the Fourth Proportional to 53,439.36, 73,741.92 and 30,777.12

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Solution

The fourth proportional to 53,439.36, 73,741.92 and 30,777.12 is: 42,469.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,439.36 : 73,741.92 = 30,777.12 : x
  2. Step 2: Convert to fraction form
    53,439.36/73,741.92 = 30,777.12/x
  3. Step 3: Cross multiply
    53,439.36x = 73,741.92 × 30,777.12
  4. Step 4: Simplify right side
    53,439.36x = 2,269,563,920.87
  5. Step 5: Solve for x
    x = 2,269,563,920.87/53,439.36
  6. Step 6: Final answer
    x = 42,469.89

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1.5x scale

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.