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Finding the Fourth Proportional to 64,749.80, 89,354.40 and 36,455.69

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Solution

The fourth proportional to 64,749.80, 89,354.40 and 36,455.69 is: 50,308.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,749.80 : 89,354.40 = 36,455.69 : x
  2. Step 2: Convert to fraction form
    64,749.80/89,354.40 = 36,455.69/x
  3. Step 3: Cross multiply
    64,749.80x = 89,354.40 × 36,455.69
  4. Step 4: Simplify right side
    64,749.80x = 3,257,476,306.54
  5. Step 5: Solve for x
    x = 3,257,476,306.54/64,749.80
  6. Step 6: Final answer
    x = 50,308.67

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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.