Home / 71,928.81-99,339.21-54,749.79

Finding the Fourth Proportional to 71,928.81, 99,339.21 and 54,749.79

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Solution

The fourth proportional to 71,928.81, 99,339.21 and 54,749.79 is: 75,613.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,928.81 : 99,339.21 = 54,749.79 : x
  2. Step 2: Convert to fraction form
    71,928.81/99,339.21 = 54,749.79/x
  3. Step 3: Cross multiply
    71,928.81x = 99,339.21 × 54,749.79
  4. Step 4: Simplify right side
    71,928.81x = 5,438,800,886.27
  5. Step 5: Solve for x
    x = 5,438,800,886.27/71,928.81
  6. Step 6: Final answer
    x = 75,613.66

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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.