Finding the Fourth Proportional to 98,431.84, 135,835.14 and 53,719.84
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Solution
The fourth proportional to 98,431.84, 135,835.14 and 53,719.84 is: 74,132.94
Step by Step Solution
- Step 1: Write the proportion equation
98,431.84 : 135,835.14 = 53,719.84 : x - Step 2: Convert to fraction form
98,431.84/135,835.14 = 53,719.84/x - Step 3: Cross multiply
98,431.84x = 135,835.14 × 53,719.84 - Step 4: Simplify right side
98,431.84x = 7,297,041,987.18 - Step 5: Solve for x
x = 7,297,041,987.18/98,431.84 - Step 6: Final answer
x = 74,132.94
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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.