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Finding the Fourth Proportional to 145,669.99, 218,503.76 and 40,488.65

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Solution

The fourth proportional to 145,669.99, 218,503.76 and 40,488.65 is: 60,732.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,669.99 : 218,503.76 = 40,488.65 : x
  2. Step 2: Convert to fraction form
    145,669.99/218,503.76 = 40,488.65/x
  3. Step 3: Cross multiply
    145,669.99x = 218,503.76 × 40,488.65
  4. Step 4: Simplify right side
    145,669.99x = 8,846,922,262.32
  5. Step 5: Solve for x
    x = 8,846,922,262.32/145,669.99
  6. Step 6: Final answer
    x = 60,732.64

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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.