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Finding the Fourth Proportional to 79,393.84, 109,557.48 and 43,578.16

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Solution

The fourth proportional to 79,393.84, 109,557.48 and 43,578.16 is: 60,134.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,393.84 : 109,557.48 = 43,578.16 : x
  2. Step 2: Convert to fraction form
    79,393.84/109,557.48 = 43,578.16/x
  3. Step 3: Cross multiply
    79,393.84x = 109,557.48 × 43,578.16
  4. Step 4: Simplify right side
    79,393.84x = 4,774,313,392.64
  5. Step 5: Solve for x
    x = 4,774,313,392.64/79,393.84
  6. Step 6: Final answer
    x = 60,134.56

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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.