Finding the Fourth Proportional to 38,478,165.30, 53,099,919.63 and 20,837,098.62
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Solution
The fourth proportional to 38,478,165.30, 53,099,919.63 and 20,837,098.62 is: 28,755,223.99
Step by Step Solution
- Step 1: Write the proportion equation
38,478,165.30 : 53,099,919.63 = 20,837,098.62 : x - Step 2: Convert to fraction form
38,478,165.30/53,099,919.63 = 20,837,098.62/x - Step 3: Cross multiply
38,478,165.30x = 53,099,919.63 × 20,837,098.62 - Step 4: Simplify right side
38,478,165.30x = 1,106,448,262,044,384 - Step 5: Solve for x
x = 1,106,448,262,044,384/38,478,165.30 - Step 6: Final answer
x = 28,755,223.99
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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.