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Finding the Fourth Proportional to 72,483.66, 100,028.46 and 43,799.28

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Solution

The fourth proportional to 72,483.66, 100,028.46 and 43,799.28 is: 60,443.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,483.66 : 100,028.46 = 43,799.28 : x
  2. Step 2: Convert to fraction form
    72,483.66/100,028.46 = 43,799.28/x
  3. Step 3: Cross multiply
    72,483.66x = 100,028.46 × 43,799.28
  4. Step 4: Simplify right side
    72,483.66x = 4,381,174,527.51
  5. Step 5: Solve for x
    x = 4,381,174,527.51/72,483.66
  6. Step 6: Final answer
    x = 60,443.62

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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.