Home / 72,218.03-99,685.94-49,631.78

Finding the Fourth Proportional to 72,218.03, 99,685.94 and 49,631.78

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Solution

The fourth proportional to 72,218.03, 99,685.94 and 49,631.78 is: 68,509.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,218.03 : 99,685.94 = 49,631.78 : x
  2. Step 2: Convert to fraction form
    72,218.03/99,685.94 = 49,631.78/x
  3. Step 3: Cross multiply
    72,218.03x = 99,685.94 × 49,631.78
  4. Step 4: Simplify right side
    72,218.03x = 4,947,590,644.23
  5. Step 5: Solve for x
    x = 4,947,590,644.23/72,218.03
  6. Step 6: Final answer
    x = 68,509.08

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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.