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Finding the Fourth Proportional to 71,852.94, 99,154.26 and 40,021.02

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Solution

The fourth proportional to 71,852.94, 99,154.26 and 40,021.02 is: 55,227.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,852.94 : 99,154.26 = 40,021.02 : x
  2. Step 2: Convert to fraction form
    71,852.94/99,154.26 = 40,021.02/x
  3. Step 3: Cross multiply
    71,852.94x = 99,154.26 × 40,021.02
  4. Step 4: Simplify right side
    71,852.94x = 3,968,254,622.55
  5. Step 5: Solve for x
    x = 3,968,254,622.55/71,852.94
  6. Step 6: Final answer
    x = 55,227.45

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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.