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Finding the Fourth Proportional to 83,651.64, 115,439.44 and 45,928.32

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Solution

The fourth proportional to 83,651.64, 115,439.44 and 45,928.32 is: 63,381.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,651.64 : 115,439.44 = 45,928.32 : x
  2. Step 2: Convert to fraction form
    83,651.64/115,439.44 = 45,928.32/x
  3. Step 3: Cross multiply
    83,651.64x = 115,439.44 × 45,928.32
  4. Step 4: Simplify right side
    83,651.64x = 5,301,939,540.94
  5. Step 5: Solve for x
    x = 5,301,939,540.94/83,651.64
  6. Step 6: Final answer
    x = 63,381.18

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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.