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Finding the Fourth Proportional to 64,519.67, 89,045.02 and 40,645.94

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Solution

The fourth proportional to 64,519.67, 89,045.02 and 40,645.94 is: 56,096.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,519.67 : 89,045.02 = 40,645.94 : x
  2. Step 2: Convert to fraction form
    64,519.67/89,045.02 = 40,645.94/x
  3. Step 3: Cross multiply
    64,519.67x = 89,045.02 × 40,645.94
  4. Step 4: Simplify right side
    64,519.67x = 3,619,318,145.80
  5. Step 5: Solve for x
    x = 3,619,318,145.80/64,519.67
  6. Step 6: Final answer
    x = 56,096.35

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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.