Finding the Fourth Proportional to 98,395.14, 135,792.17 and 55,378.76
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Solution
The fourth proportional to 98,395.14, 135,792.17 and 55,378.76 is: 76,426.56
Step by Step Solution
- Step 1: Write the proportion equation
98,395.14 : 135,792.17 = 55,378.76 : x - Step 2: Convert to fraction form
98,395.14/135,792.17 = 55,378.76/x - Step 3: Cross multiply
98,395.14x = 135,792.17 × 55,378.76 - Step 4: Simplify right side
98,395.14x = 7,520,001,992.31 - Step 5: Solve for x
x = 7,520,001,992.31/98,395.14 - Step 6: Final answer
x = 76,426.56
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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.