Finding the Fourth Proportional to 98,432.94, 135,837.46 and 53,720.94
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Solution
The fourth proportional to 98,432.94, 135,837.46 and 53,720.94 is: 74,134.90
Step by Step Solution
- Step 1: Write the proportion equation
98,432.94 : 135,837.46 = 53,720.94 : x - Step 2: Convert to fraction form
98,432.94/135,837.46 = 53,720.94/x - Step 3: Cross multiply
98,432.94x = 135,837.46 × 53,720.94 - Step 4: Simplify right side
98,432.94x = 7,297,316,038.41 - Step 5: Solve for x
x = 7,297,316,038.41/98,432.94 - Step 6: Final answer
x = 74,134.90
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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.