Finding the Fourth Proportional to 28,564,566.42, 39,446,005.05 and 19,886,467.98
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Solution
The fourth proportional to 28,564,566.42, 39,446,005.05 and 19,886,467.98 is: 27,462,055.78
Step by Step Solution
- Step 1: Write the proportion equation
28,564,566.42 : 39,446,005.05 = 19,886,467.98 : x - Step 2: Convert to fraction form
28,564,566.42/39,446,005.05 = 19,886,467.98/x - Step 3: Cross multiply
28,564,566.42x = 39,446,005.05 × 19,886,467.98 - Step 4: Simplify right side
28,564,566.42x = 784,441,716,365,743.25 - Step 5: Solve for x
x = 784,441,716,365,743.25/28,564,566.42 - Step 6: Final answer
x = 27,462,055.78
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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.