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Finding the Fourth Proportional to 77,068.63, 115,602.94 and 21,664.63

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Solution

The fourth proportional to 77,068.63, 115,602.94 and 21,664.63 is: 32,496.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,068.63 : 115,602.94 = 21,664.63 : x
  2. Step 2: Convert to fraction form
    77,068.63/115,602.94 = 21,664.63/x
  3. Step 3: Cross multiply
    77,068.63x = 115,602.94 × 21,664.63
  4. Step 4: Simplify right side
    77,068.63x = 2,504,494,922.01
  5. Step 5: Solve for x
    x = 2,504,494,922.01/77,068.63
  6. Step 6: Final answer
    x = 32,496.94

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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.