Finding the Fourth Proportional to 97,872.24, 135,057.29 and 57,578.21
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Solution
The fourth proportional to 97,872.24, 135,057.29 and 57,578.21 is: 79,454.17
Step by Step Solution
- Step 1: Write the proportion equation
97,872.24 : 135,057.29 = 57,578.21 : x - Step 2: Convert to fraction form
97,872.24/135,057.29 = 57,578.21/x - Step 3: Cross multiply
97,872.24x = 135,057.29 × 57,578.21 - Step 4: Simplify right side
97,872.24x = 7,776,357,271.32 - Step 5: Solve for x
x = 7,776,357,271.32/97,872.24 - Step 6: Final answer
x = 79,454.17
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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.