Finding the Fourth Proportional to 8,124,586.08, 11,205,390.96 and 7,142,425.19
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Solution
The fourth proportional to 8,124,586.08, 11,205,390.96 and 7,142,425.19 is: 9,850,799.27
Step by Step Solution
- Step 1: Write the proportion equation
8,124,586.08 : 11,205,390.96 = 7,142,425.19 : x - Step 2: Convert to fraction form
8,124,586.08/11,205,390.96 = 7,142,425.19/x - Step 3: Cross multiply
8,124,586.08x = 11,205,390.96 × 7,142,425.19 - Step 4: Simplify right side
8,124,586.08x = 80,033,666,642,495.55 - Step 5: Solve for x
x = 80,033,666,642,495.55/8,124,586.08 - Step 6: Final answer
x = 9,850,799.27
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Double scale
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1.5x scale
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.