Finding the Fourth Proportional to 76,890.36, 106,108.85 and 42,897.99
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Solution
The fourth proportional to 76,890.36, 106,108.85 and 42,897.99 is: 59,199.31
Step by Step Solution
- Step 1: Write the proportion equation
76,890.36 : 106,108.85 = 42,897.99 : x - Step 2: Convert to fraction form
76,890.36/106,108.85 = 42,897.99/x - Step 3: Cross multiply
76,890.36x = 106,108.85 × 42,897.99 - Step 4: Simplify right side
76,890.36x = 4,551,856,171.72 - Step 5: Solve for x
x = 4,551,856,171.72/76,890.36 - Step 6: Final answer
x = 59,199.31
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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.