Finding the Fourth Proportional to 78,344,657.05, 109,795,893.95 and 78,344,657.05
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Solution
The fourth proportional to 78,344,657.05, 109,795,893.95 and 78,344,657.05 is: 109,795,893.95
Step by Step Solution
- Step 1: Write the proportion equation
78,344,657.05 : 109,795,893.95 = 78,344,657.05 : x - Step 2: Convert to fraction form
78,344,657.05/109,795,893.95 = 78,344,657.05/x - Step 3: Cross multiply
78,344,657.05x = 109,795,893.95 × 78,344,657.05 - Step 4: Simplify right side
78,344,657.05x = 8,601,921,657,010,920 - Step 5: Solve for x
x = 8,601,921,657,010,920/78,344,657.05 - Step 6: Final answer
x = 109,795,893.95
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.