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Finding the Fourth Proportional to 72,248.04, 108,361.11 and 19,661.63

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Solution

The fourth proportional to 72,248.04, 108,361.11 and 19,661.63 is: 29,489.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,248.04 : 108,361.11 = 19,661.63 : x
  2. Step 2: Convert to fraction form
    72,248.04/108,361.11 = 19,661.63/x
  3. Step 3: Cross multiply
    72,248.04x = 108,361.11 × 19,661.63
  4. Step 4: Simplify right side
    72,248.04x = 2,130,555,509.40
  5. Step 5: Solve for x
    x = 2,130,555,509.40/72,248.04
  6. Step 6: Final answer
    x = 29,489.46

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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.