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Finding the Fourth Proportional to 66,588.64, 91,895 and 38,294.32

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Solution

The fourth proportional to 66,588.64, 91,895 and 38,294.32 is: 52,847.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,588.64 : 91,895 = 38,294.32 : x
  2. Step 2: Convert to fraction form
    66,588.64/91,895 = 38,294.32/x
  3. Step 3: Cross multiply
    66,588.64x = 91,895 × 38,294.32
  4. Step 4: Simplify right side
    66,588.64x = 3,519,056,536.40
  5. Step 5: Solve for x
    x = 3,519,056,536.40/66,588.64
  6. Step 6: Final answer
    x = 52,847.70

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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.