Finding the Fourth Proportional to 19,855,981.35, 29,785,688.82 and 5,479,049.79
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Solution
The fourth proportional to 19,855,981.35, 29,785,688.82 and 5,479,049.79 is: 8,219,048.42
Step by Step Solution
- Step 1: Write the proportion equation
19,855,981.35 : 29,785,688.82 = 5,479,049.79 : x - Step 2: Convert to fraction form
19,855,981.35/29,785,688.82 = 5,479,049.79/x - Step 3: Cross multiply
19,855,981.35x = 29,785,688.82 × 5,479,049.79 - Step 4: Simplify right side
19,855,981.35x = 163,197,272,074,226.34 - Step 5: Solve for x
x = 163,197,272,074,226.34/19,855,981.35 - Step 6: Final answer
x = 8,219,048.42
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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.