Finding the Fourth Proportional to 68,345.74, 102,521.71 and 20,957.36
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Solution
The fourth proportional to 68,345.74, 102,521.71 and 20,957.36 is: 31,436.99
Step by Step Solution
- Step 1: Write the proportion equation
68,345.74 : 102,521.71 = 20,957.36 : x - Step 2: Convert to fraction form
68,345.74/102,521.71 = 20,957.36/x - Step 3: Cross multiply
68,345.74x = 102,521.71 × 20,957.36 - Step 4: Simplify right side
68,345.74x = 2,148,584,384.29 - Step 5: Solve for x
x = 2,148,584,384.29/68,345.74 - Step 6: Final answer
x = 31,436.99
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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.