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Finding the Fourth Proportional to 76,880.63, 115,340.38 and 21,476.63

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Solution

The fourth proportional to 76,880.63, 115,340.38 and 21,476.63 is: 32,220.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,880.63 : 115,340.38 = 21,476.63 : x
  2. Step 2: Convert to fraction form
    76,880.63/115,340.38 = 21,476.63/x
  3. Step 3: Cross multiply
    76,880.63x = 115,340.38 × 21,476.63
  4. Step 4: Simplify right side
    76,880.63x = 2,477,122,665.32
  5. Step 5: Solve for x
    x = 2,477,122,665.32/76,880.63
  6. Step 6: Final answer
    x = 32,220.37

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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.