Finding the Fourth Proportional to 88,168,078.18, 121,681,790.49 and 53,379,938.98
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Solution
The fourth proportional to 88,168,078.18, 121,681,790.49 and 53,379,938.98 is: 73,670,274.84
Step by Step Solution
- Step 1: Write the proportion equation
88,168,078.18 : 121,681,790.49 = 53,379,938.98 : x - Step 2: Convert to fraction form
88,168,078.18/121,681,790.49 = 53,379,938.98/x - Step 3: Cross multiply
88,168,078.18x = 121,681,790.49 × 53,379,938.98 - Step 4: Simplify right side
88,168,078.18x = 6,495,366,551,333,344 - Step 5: Solve for x
x = 6,495,366,551,333,344/88,168,078.18 - Step 6: Final answer
x = 73,670,274.84
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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.