Finding the Fourth Proportional to 28,068,289.49, 38,772,151.08 and 21,151,252.66
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Solution
The fourth proportional to 28,068,289.49, 38,772,151.08 and 21,151,252.66 is: 29,217,297.47
Step by Step Solution
- Step 1: Write the proportion equation
28,068,289.49 : 38,772,151.08 = 21,151,252.66 : x - Step 2: Convert to fraction form
28,068,289.49/38,772,151.08 = 21,151,252.66/x - Step 3: Cross multiply
28,068,289.49x = 38,772,151.08 × 21,151,252.66 - Step 4: Simplify right side
28,068,289.49x = 820,079,563,488,524.25 - Step 5: Solve for x
x = 820,079,563,488,524.25/28,068,289.49 - Step 6: Final answer
x = 29,217,297.47
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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.