Finding the Fourth Proportional to 98,478.08, 135,904.64 and 53,765.76
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Solution
The fourth proportional to 98,478.08, 135,904.64 and 53,765.76 is: 74,199.42
Step by Step Solution
- Step 1: Write the proportion equation
98,478.08 : 135,904.64 = 53,765.76 : x - Step 2: Convert to fraction form
98,478.08/135,904.64 = 53,765.76/x - Step 3: Cross multiply
98,478.08x = 135,904.64 × 53,765.76 - Step 4: Simplify right side
98,478.08x = 7,307,016,257.13 - Step 5: Solve for x
x = 7,307,016,257.13/98,478.08 - Step 6: Final answer
x = 74,199.42
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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.