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Finding the Fourth Proportional to 72,075.51, 108,123.60 and 22,159.80

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Solution

The fourth proportional to 72,075.51, 108,123.60 and 22,159.80 is: 33,242.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,075.51 : 108,123.60 = 22,159.80 : x
  2. Step 2: Convert to fraction form
    72,075.51/108,123.60 = 22,159.80/x
  3. Step 3: Cross multiply
    72,075.51x = 108,123.60 × 22,159.80
  4. Step 4: Simplify right side
    72,075.51x = 2,395,997,351.28
  5. Step 5: Solve for x
    x = 2,395,997,351.28/72,075.51
  6. Step 6: Final answer
    x = 33,242.88

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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.