Home / 49,664.61-74,029.05-45,678.80

Finding the Fourth Proportional to 49,664.61, 74,029.05 and 45,678.80

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Solution

The fourth proportional to 49,664.61, 74,029.05 and 45,678.80 is: 68,087.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,664.61 : 74,029.05 = 45,678.80 : x
  2. Step 2: Convert to fraction form
    49,664.61/74,029.05 = 45,678.80/x
  3. Step 3: Cross multiply
    49,664.61x = 74,029.05 × 45,678.80
  4. Step 4: Simplify right side
    49,664.61x = 3,381,558,354.21
  5. Step 5: Solve for x
    x = 3,381,558,354.21/49,664.61
  6. Step 6: Final answer
    x = 68,087.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.