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Finding the Fourth Proportional to 64,785.56, 89,402.85 and 36,104.60

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Solution

The fourth proportional to 64,785.56, 89,402.85 and 36,104.60 is: 49,823.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,785.56 : 89,402.85 = 36,104.60 : x
  2. Step 2: Convert to fraction form
    64,785.56/89,402.85 = 36,104.60/x
  3. Step 3: Cross multiply
    64,785.56x = 89,402.85 × 36,104.60
  4. Step 4: Simplify right side
    64,785.56x = 3,227,854,361.62
  5. Step 5: Solve for x
    x = 3,227,854,361.62/64,785.56
  6. Step 6: Final answer
    x = 49,823.67

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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.