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Finding the Fourth Proportional to 101,318.80, 152,021.40 and 48,701.20

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Solution

The fourth proportional to 101,318.80, 152,021.40 and 48,701.20 is: 73,072.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,318.80 : 152,021.40 = 48,701.20 : x
  2. Step 2: Convert to fraction form
    101,318.80/152,021.40 = 48,701.20/x
  3. Step 3: Cross multiply
    101,318.80x = 152,021.40 × 48,701.20
  4. Step 4: Simplify right side
    101,318.80x = 7,403,624,605.68
  5. Step 5: Solve for x
    x = 7,403,624,605.68/101,318.80
  6. Step 6: Final answer
    x = 73,072.57

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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.