Finding the Fourth Proportional to 97,881.21, 135,071.55 and 55,440.09
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Solution
The fourth proportional to 97,881.21, 135,071.55 and 55,440.09 is: 76,504.76
Step by Step Solution
- Step 1: Write the proportion equation
97,881.21 : 135,071.55 = 55,440.09 : x - Step 2: Convert to fraction form
97,881.21/135,071.55 = 55,440.09/x - Step 3: Cross multiply
97,881.21x = 135,071.55 × 55,440.09 - Step 4: Simplify right side
97,881.21x = 7,488,378,888.44 - Step 5: Solve for x
x = 7,488,378,888.44/97,881.21 - Step 6: Final answer
x = 76,504.76
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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.