Finding the Fourth Proportional to 79,878.96, 119,730.96 and 40,381.74
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Solution
The fourth proportional to 79,878.96, 119,730.96 and 40,381.74 is: 60,528.39
Step by Step Solution
- Step 1: Write the proportion equation
79,878.96 : 119,730.96 = 40,381.74 : x - Step 2: Convert to fraction form
79,878.96/119,730.96 = 40,381.74/x - Step 3: Cross multiply
79,878.96x = 119,730.96 × 40,381.74 - Step 4: Simplify right side
79,878.96x = 4,834,944,496.67 - Step 5: Solve for x
x = 4,834,944,496.67/79,878.96 - Step 6: Final answer
x = 60,528.39
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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.