Finding the Fourth Proportional to 8,757,977.99, 11,980,975.98 and 8,721,090.32
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Solution
The fourth proportional to 8,757,977.99, 11,980,975.98 and 8,721,090.32 is: 11,930,513.39
Step by Step Solution
- Step 1: Write the proportion equation
8,757,977.99 : 11,980,975.98 = 8,721,090.32 : x - Step 2: Convert to fraction form
8,757,977.99/11,980,975.98 = 8,721,090.32/x - Step 3: Cross multiply
8,757,977.99x = 11,980,975.98 × 8,721,090.32 - Step 4: Simplify right side
8,757,977.99x = 104,487,173,616,129.72 - Step 5: Solve for x
x = 104,487,173,616,129.72/8,757,977.99 - Step 6: Final answer
x = 11,930,513.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.