Finding the Fourth Proportional to 28,730,767.70, 39,649,300.71 and 15,678,867.62
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Solution
The fourth proportional to 28,730,767.70, 39,649,300.71 and 15,678,867.62 is: 21,637,296.42
Step by Step Solution
- Step 1: Write the proportion equation
28,730,767.70 : 39,649,300.71 = 15,678,867.62 : x - Step 2: Convert to fraction form
28,730,767.70/39,649,300.71 = 15,678,867.62/x - Step 3: Cross multiply
28,730,767.70x = 39,649,300.71 × 15,678,867.62 - Step 4: Simplify right side
28,730,767.70x = 621,656,137,057,662 - Step 5: Solve for x
x = 621,656,137,057,662/28,730,767.70 - Step 6: Final answer
x = 21,637,296.42
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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.