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Finding the Fourth Proportional to 72,936.58, 100,652.62 and 42,315.62

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Solution

The fourth proportional to 72,936.58, 100,652.62 and 42,315.62 is: 58,395.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,936.58 : 100,652.62 = 42,315.62 : x
  2. Step 2: Convert to fraction form
    72,936.58/100,652.62 = 42,315.62/x
  3. Step 3: Cross multiply
    72,936.58x = 100,652.62 × 42,315.62
  4. Step 4: Simplify right side
    72,936.58x = 4,259,178,019.92
  5. Step 5: Solve for x
    x = 4,259,178,019.92/72,936.58
  6. Step 6: Final answer
    x = 58,395.64

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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.