Finding the Fourth Proportional to 78,114.47, 107,798.99 and 43,657.70
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Solution
The fourth proportional to 78,114.47, 107,798.99 and 43,657.70 is: 60,248.19
Step by Step Solution
- Step 1: Write the proportion equation
78,114.47 : 107,798.99 = 43,657.70 : x - Step 2: Convert to fraction form
78,114.47/107,798.99 = 43,657.70/x - Step 3: Cross multiply
78,114.47x = 107,798.99 × 43,657.70 - Step 4: Simplify right side
78,114.47x = 4,706,255,208.44 - Step 5: Solve for x
x = 4,706,255,208.44/78,114.47 - Step 6: Final answer
x = 60,248.19
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1.5x scale
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.