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Finding the Fourth Proportional to 99,963.19, 150,018.72 and 47,372.77

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Solution

The fourth proportional to 99,963.19, 150,018.72 and 47,372.77 is: 71,094.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,963.19 : 150,018.72 = 47,372.77 : x
  2. Step 2: Convert to fraction form
    99,963.19/150,018.72 = 47,372.77/x
  3. Step 3: Cross multiply
    99,963.19x = 150,018.72 × 47,372.77
  4. Step 4: Simplify right side
    99,963.19x = 7,106,802,318.25
  5. Step 5: Solve for x
    x = 7,106,802,318.25/99,963.19
  6. Step 6: Final answer
    x = 71,094.19

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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.