Finding the Fourth Proportional to 28,777,889.35, 39,713,590.53 and 15,725,147.99
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Solution
The fourth proportional to 28,777,889.35, 39,713,590.53 and 15,725,147.99 is: 21,700,760.63
Step by Step Solution
- Step 1: Write the proportion equation
28,777,889.35 : 39,713,590.53 = 15,725,147.99 : x - Step 2: Convert to fraction form
28,777,889.35/39,713,590.53 = 15,725,147.99/x - Step 3: Cross multiply
28,777,889.35x = 39,713,590.53 × 15,725,147.99 - Step 4: Simplify right side
28,777,889.35x = 624,502,088,219,886.75 - Step 5: Solve for x
x = 624,502,088,219,886.75/28,777,889.35 - Step 6: Final answer
x = 21,700,760.63
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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.