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Finding the Fourth Proportional to 35,086.32, 48,416.80 and 19,980.54

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Solution

The fourth proportional to 35,086.32, 48,416.80 and 19,980.54 is: 27,571.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,086.32 : 48,416.80 = 19,980.54 : x
  2. Step 2: Convert to fraction form
    35,086.32/48,416.80 = 19,980.54/x
  3. Step 3: Cross multiply
    35,086.32x = 48,416.80 × 19,980.54
  4. Step 4: Simplify right side
    35,086.32x = 967,393,809.07
  5. Step 5: Solve for x
    x = 967,393,809.07/35,086.32
  6. Step 6: Final answer
    x = 27,571.82

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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.