Finding the Fourth Proportional to 74,328.21, 102,658.14 and 48,948.07
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Solution
The fourth proportional to 74,328.21, 102,658.14 and 48,948.07 is: 67,604.46
Step by Step Solution
- Step 1: Write the proportion equation
74,328.21 : 102,658.14 = 48,948.07 : x - Step 2: Convert to fraction form
74,328.21/102,658.14 = 48,948.07/x - Step 3: Cross multiply
74,328.21x = 102,658.14 × 48,948.07 - Step 4: Simplify right side
74,328.21x = 5,024,917,822.79 - Step 5: Solve for x
x = 5,024,917,822.79/74,328.21 - Step 6: Final answer
x = 67,604.46
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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.