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Finding the Fourth Proportional to 64,954.32, 89,627.32 and 39,447.38

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Solution

The fourth proportional to 64,954.32, 89,627.32 and 39,447.38 is: 54,431.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,954.32 : 89,627.32 = 39,447.38 : x
  2. Step 2: Convert to fraction form
    64,954.32/89,627.32 = 39,447.38/x
  3. Step 3: Cross multiply
    64,954.32x = 89,627.32 × 39,447.38
  4. Step 4: Simplify right side
    64,954.32x = 3,535,562,950.42
  5. Step 5: Solve for x
    x = 3,535,562,950.42/64,954.32
  6. Step 6: Final answer
    x = 54,431.53

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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.