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Finding the Fourth Proportional to 99,838.79, 149,661.28 and 39,849.89

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Solution

The fourth proportional to 99,838.79, 149,661.28 and 39,849.89 is: 59,736.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,838.79 : 149,661.28 = 39,849.89 : x
  2. Step 2: Convert to fraction form
    99,838.79/149,661.28 = 39,849.89/x
  3. Step 3: Cross multiply
    99,838.79x = 149,661.28 × 39,849.89
  4. Step 4: Simplify right side
    99,838.79x = 5,963,984,846.77
  5. Step 5: Solve for x
    x = 5,963,984,846.77/99,838.79
  6. Step 6: Final answer
    x = 59,736.15

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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.