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Finding the Fourth Proportional to 64,622.85, 89,178.67 and 36,328.53

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Solution

The fourth proportional to 64,622.85, 89,178.67 and 36,328.53 is: 50,132.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,622.85 : 89,178.67 = 36,328.53 : x
  2. Step 2: Convert to fraction form
    64,622.85/89,178.67 = 36,328.53/x
  3. Step 3: Cross multiply
    64,622.85x = 89,178.67 × 36,328.53
  4. Step 4: Simplify right side
    64,622.85x = 3,239,730,368.29
  5. Step 5: Solve for x
    x = 3,239,730,368.29/64,622.85
  6. Step 6: Final answer
    x = 50,132.90

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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.