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Finding the Fourth Proportional to 66,317.63, 91,518.32 and 36,509.63

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Solution

The fourth proportional to 66,317.63, 91,518.32 and 36,509.63 is: 50,383.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,317.63 : 91,518.32 = 36,509.63 : x
  2. Step 2: Convert to fraction form
    66,317.63/91,518.32 = 36,509.63/x
  3. Step 3: Cross multiply
    66,317.63x = 91,518.32 × 36,509.63
  4. Step 4: Simplify right side
    66,317.63x = 3,341,299,635.10
  5. Step 5: Solve for x
    x = 3,341,299,635.10/66,317.63
  6. Step 6: Final answer
    x = 50,383.28

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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.