Finding the Fourth Proportional to 97,876.12, 135,066.78 and 57,037.66
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Solution
The fourth proportional to 97,876.12, 135,066.78 and 57,037.66 is: 78,710.65
Step by Step Solution
- Step 1: Write the proportion equation
97,876.12 : 135,066.78 = 57,037.66 : x - Step 2: Convert to fraction form
97,876.12/135,066.78 = 57,037.66/x - Step 3: Cross multiply
97,876.12x = 135,066.78 × 57,037.66 - Step 4: Simplify right side
97,876.12x = 7,703,893,074.93 - Step 5: Solve for x
x = 7,703,893,074.93/97,876.12 - Step 6: Final answer
x = 78,710.65
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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.