Finding the Fourth Proportional to 74,543,484.20, 102,641,860.40 and 74,328,250.59
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Solution
The fourth proportional to 74,543,484.20, 102,641,860.40 and 74,328,250.59 is: 102,345,496.76
Step by Step Solution
- Step 1: Write the proportion equation
74,543,484.20 : 102,641,860.40 = 74,328,250.59 : x - Step 2: Convert to fraction form
74,543,484.20/102,641,860.40 = 74,328,250.59/x - Step 3: Cross multiply
74,543,484.20x = 102,641,860.40 × 74,328,250.59 - Step 4: Simplify right side
74,543,484.20x = 7,629,189,920,463,356 - Step 5: Solve for x
x = 7,629,189,920,463,356/74,543,484.20 - Step 6: Final answer
x = 102,345,496.76
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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.