Finding the Fourth Proportional to 98,349.60, 147,538.80 and 31,776.96
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Solution
The fourth proportional to 98,349.60, 147,538.80 and 31,776.96 is: 47,670.09
Step by Step Solution
- Step 1: Write the proportion equation
98,349.60 : 147,538.80 = 31,776.96 : x - Step 2: Convert to fraction form
98,349.60/147,538.80 = 31,776.96/x - Step 3: Cross multiply
98,349.60x = 147,538.80 × 31,776.96 - Step 4: Simplify right side
98,349.60x = 4,688,334,546.05 - Step 5: Solve for x
x = 4,688,334,546.05/98,349.60 - Step 6: Final answer
x = 47,670.09
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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.