Finding the Fourth Proportional to 86,749,657.30, 129,872,543.55 and 84,230,233.30
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Solution
The fourth proportional to 86,749,657.30, 129,872,543.55 and 84,230,233.30 is: 126,100,724.58
Step by Step Solution
- Step 1: Write the proportion equation
86,749,657.30 : 129,872,543.55 = 84,230,233.30 : x - Step 2: Convert to fraction form
86,749,657.30/129,872,543.55 = 84,230,233.30/x - Step 3: Cross multiply
86,749,657.30x = 129,872,543.55 × 84,230,233.30 - Step 4: Simplify right side
86,749,657.30x = 10,939,194,642,480,910 - Step 5: Solve for x
x = 10,939,194,642,480,910/86,749,657.30 - Step 6: Final answer
x = 126,100,724.58
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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.