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Finding the Fourth Proportional to 66,616.64, 91,933.64 and 38,322.32

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Solution

The fourth proportional to 66,616.64, 91,933.64 and 38,322.32 is: 52,886.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,616.64 : 91,933.64 = 38,322.32 : x
  2. Step 2: Convert to fraction form
    66,616.64/91,933.64 = 38,322.32/x
  3. Step 3: Cross multiply
    66,616.64x = 91,933.64 × 38,322.32
  4. Step 4: Simplify right side
    66,616.64x = 3,523,110,370.84
  5. Step 5: Solve for x
    x = 3,523,110,370.84/66,616.64
  6. Step 6: Final answer
    x = 52,886.34

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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.