Home / 39,334.80-54,221.40-31,364.40

Finding the Fourth Proportional to 39,334.80, 54,221.40 and 31,364.40

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Solution

The fourth proportional to 39,334.80, 54,221.40 and 31,364.40 is: 43,234.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,334.80 : 54,221.40 = 31,364.40 : x
  2. Step 2: Convert to fraction form
    39,334.80/54,221.40 = 31,364.40/x
  3. Step 3: Cross multiply
    39,334.80x = 54,221.40 × 31,364.40
  4. Step 4: Simplify right side
    39,334.80x = 1,700,621,678.16
  5. Step 5: Solve for x
    x = 1,700,621,678.16/39,334.80
  6. Step 6: Final answer
    x = 43,234.53

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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.