Finding the Fourth Proportional to 75,329.70, 112,994.55 and 19,169.70
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Solution
The fourth proportional to 75,329.70, 112,994.55 and 19,169.70 is: 28,754.55
Step by Step Solution
- Step 1: Write the proportion equation
75,329.70 : 112,994.55 = 19,169.70 : x - Step 2: Convert to fraction form
75,329.70/112,994.55 = 19,169.70/x - Step 3: Cross multiply
75,329.70x = 112,994.55 × 19,169.70 - Step 4: Simplify right side
75,329.70x = 2,166,071,625.14 - Step 5: Solve for x
x = 2,166,071,625.14/75,329.70 - Step 6: Final answer
x = 28,754.55
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1.5x scale
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.