Finding the Fourth Proportional to 69,239.21, 103,876.34 and 19,319.29
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Solution
The fourth proportional to 69,239.21, 103,876.34 and 19,319.29 is: 28,983.82
Step by Step Solution
- Step 1: Write the proportion equation
69,239.21 : 103,876.34 = 19,319.29 : x - Step 2: Convert to fraction form
69,239.21/103,876.34 = 19,319.29/x - Step 3: Cross multiply
69,239.21x = 103,876.34 × 19,319.29 - Step 4: Simplify right side
69,239.21x = 2,006,816,780.31 - Step 5: Solve for x
x = 2,006,816,780.31/69,239.21 - Step 6: Final answer
x = 28,983.82
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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.