Finding the Fourth Proportional to 91,570.08, 137,442.60 and 56,578.08
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Solution
The fourth proportional to 91,570.08, 137,442.60 and 56,578.08 is: 84,921.17
Step by Step Solution
- Step 1: Write the proportion equation
91,570.08 : 137,442.60 = 56,578.08 : x - Step 2: Convert to fraction form
91,570.08/137,442.60 = 56,578.08/x - Step 3: Cross multiply
91,570.08x = 137,442.60 × 56,578.08 - Step 4: Simplify right side
91,570.08x = 7,776,238,418.21 - Step 5: Solve for x
x = 7,776,238,418.21/91,570.08 - Step 6: Final answer
x = 84,921.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.