Finding the Fourth Proportional to 28,928,421.09, 39,918,582.67 and 17,165,662.65
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Solution
The fourth proportional to 28,928,421.09, 39,918,582.67 and 17,165,662.65 is: 23,687,048.85
Step by Step Solution
- Step 1: Write the proportion equation
28,928,421.09 : 39,918,582.67 = 17,165,662.65 : x - Step 2: Convert to fraction form
28,928,421.09/39,918,582.67 = 17,165,662.65/x - Step 3: Cross multiply
28,928,421.09x = 39,918,582.67 × 17,165,662.65 - Step 4: Simplify right side
28,928,421.09x = 685,228,923,579,356.25 - Step 5: Solve for x
x = 685,228,923,579,356.25/28,928,421.09 - Step 6: Final answer
x = 23,687,048.85
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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.