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Finding the Fourth Proportional to 79,467.63, 109,533.60 and 77,364.17

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Solution

The fourth proportional to 79,467.63, 109,533.60 and 77,364.17 is: 106,634.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,467.63 : 109,533.60 = 77,364.17 : x
  2. Step 2: Convert to fraction form
    79,467.63/109,533.60 = 77,364.17/x
  3. Step 3: Cross multiply
    79,467.63x = 109,533.60 × 77,364.17
  4. Step 4: Simplify right side
    79,467.63x = 8,473,975,503.44
  5. Step 5: Solve for x
    x = 8,473,975,503.44/79,467.63
  6. Step 6: Final answer
    x = 106,634.31

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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.