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Finding the Fourth Proportional to 34,755.60, 47,945.06 and 21,987.28

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Solution

The fourth proportional to 34,755.60, 47,945.06 and 21,987.28 is: 30,331.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,755.60 : 47,945.06 = 21,987.28 : x
  2. Step 2: Convert to fraction form
    34,755.60/47,945.06 = 21,987.28/x
  3. Step 3: Cross multiply
    34,755.60x = 47,945.06 × 21,987.28
  4. Step 4: Simplify right side
    34,755.60x = 1,054,181,458.84
  5. Step 5: Solve for x
    x = 1,054,181,458.84/34,755.60
  6. Step 6: Final answer
    x = 30,331.27

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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.