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Finding the Fourth Proportional to 64,489.96, 88,984.74 and 39,347.56

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Solution

The fourth proportional to 64,489.96, 88,984.74 and 39,347.56 is: 54,292.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,489.96 : 88,984.74 = 39,347.56 : x
  2. Step 2: Convert to fraction form
    64,489.96/88,984.74 = 39,347.56/x
  3. Step 3: Cross multiply
    64,489.96x = 88,984.74 × 39,347.56
  4. Step 4: Simplify right side
    64,489.96x = 3,501,332,396.23
  5. Step 5: Solve for x
    x = 3,501,332,396.23/64,489.96
  6. Step 6: Final answer
    x = 54,292.67

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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.