Finding the Fourth Proportional to 78,070.76, 107,737.97 and 42,260.75
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Solution
The fourth proportional to 78,070.76, 107,737.97 and 42,260.75 is: 58,320.00
Step by Step Solution
- Step 1: Write the proportion equation
78,070.76 : 107,737.97 = 42,260.75 : x - Step 2: Convert to fraction form
78,070.76/107,737.97 = 42,260.75/x - Step 3: Cross multiply
78,070.76x = 107,737.97 × 42,260.75 - Step 4: Simplify right side
78,070.76x = 4,553,086,665.68 - Step 5: Solve for x
x = 4,553,086,665.68/78,070.76 - Step 6: Final answer
x = 58,320.00
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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.