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Finding the Fourth Proportional to 77,656.85, 116,485.42 and 21,497.12

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Solution

The fourth proportional to 77,656.85, 116,485.42 and 21,497.12 is: 32,245.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,656.85 : 116,485.42 = 21,497.12 : x
  2. Step 2: Convert to fraction form
    77,656.85/116,485.42 = 21,497.12/x
  3. Step 3: Cross multiply
    77,656.85x = 116,485.42 × 21,497.12
  4. Step 4: Simplify right side
    77,656.85x = 2,504,101,051.99
  5. Step 5: Solve for x
    x = 2,504,101,051.99/77,656.85
  6. Step 6: Final answer
    x = 32,245.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.