Finding the Fourth Proportional to 90,462.40, 135,705.99 and 31,282.18
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Solution
The fourth proportional to 90,462.40, 135,705.99 and 31,282.18 is: 46,927.55
Step by Step Solution
- Step 1: Write the proportion equation
90,462.40 : 135,705.99 = 31,282.18 : x - Step 2: Convert to fraction form
90,462.40/135,705.99 = 31,282.18/x - Step 3: Cross multiply
90,462.40x = 135,705.99 × 31,282.18 - Step 4: Simplify right side
90,462.40x = 4,245,179,206.26 - Step 5: Solve for x
x = 4,245,179,206.26/90,462.40 - Step 6: Final answer
x = 46,927.55
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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.