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Finding the Fourth Proportional to 64,465.64, 88,991.46 and 39,325.16

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Solution

The fourth proportional to 64,465.64, 88,991.46 and 39,325.16 is: 54,286.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,465.64 : 88,991.46 = 39,325.16 : x
  2. Step 2: Convert to fraction form
    64,465.64/88,991.46 = 39,325.16/x
  3. Step 3: Cross multiply
    64,465.64x = 88,991.46 × 39,325.16
  4. Step 4: Simplify right side
    64,465.64x = 3,499,603,403.13
  5. Step 5: Solve for x
    x = 3,499,603,403.13/64,465.64
  6. Step 6: Final answer
    x = 54,286.34

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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.