Finding the Fourth Proportional to 98,121.65, 135,372.45 and 55,655.58
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Solution
The fourth proportional to 98,121.65, 135,372.45 and 55,655.58 is: 76,784.61
Step by Step Solution
- Step 1: Write the proportion equation
98,121.65 : 135,372.45 = 55,655.58 : x - Step 2: Convert to fraction form
98,121.65/135,372.45 = 55,655.58/x - Step 3: Cross multiply
98,121.65x = 135,372.45 × 55,655.58 - Step 4: Simplify right side
98,121.65x = 7,534,232,478.13 - Step 5: Solve for x
x = 7,534,232,478.13/98,121.65 - Step 6: Final answer
x = 76,784.61
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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.