Finding the Fourth Proportional to 74,508.95, 102,860.44 and 57,474.96
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Solution
The fourth proportional to 74,508.95, 102,860.44 and 57,474.96 is: 79,344.82
Step by Step Solution
- Step 1: Write the proportion equation
74,508.95 : 102,860.44 = 57,474.96 : x - Step 2: Convert to fraction form
74,508.95/102,860.44 = 57,474.96/x - Step 3: Cross multiply
74,508.95x = 102,860.44 × 57,474.96 - Step 4: Simplify right side
74,508.95x = 5,911,899,530.90 - Step 5: Solve for x
x = 5,911,899,530.90/74,508.95 - Step 6: Final answer
x = 79,344.82
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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.