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Finding the Fourth Proportional to 77,770.94, 116,657.01 and 21,612.42

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Solution

The fourth proportional to 77,770.94, 116,657.01 and 21,612.42 is: 32,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,770.94 : 116,657.01 = 21,612.42 : x
  2. Step 2: Convert to fraction form
    77,770.94/116,657.01 = 21,612.42/x
  3. Step 3: Cross multiply
    77,770.94x = 116,657.01 × 21,612.42
  4. Step 4: Simplify right side
    77,770.94x = 2,521,240,296.06
  5. Step 5: Solve for x
    x = 2,521,240,296.06/77,770.94
  6. Step 6: Final answer
    x = 32,418.80

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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.