Finding the Fourth Proportional to 97,821.56, 134,987.26 and 54,211.18
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Solution
The fourth proportional to 97,821.56, 134,987.26 and 54,211.18 is: 74,807.82
Step by Step Solution
- Step 1: Write the proportion equation
97,821.56 : 134,987.26 = 54,211.18 : x - Step 2: Convert to fraction form
97,821.56/134,987.26 = 54,211.18/x - Step 3: Cross multiply
97,821.56x = 134,987.26 × 54,211.18 - Step 4: Simplify right side
97,821.56x = 7,317,817,703.57 - Step 5: Solve for x
x = 7,317,817,703.57/97,821.56 - Step 6: Final answer
x = 74,807.82
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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.