Finding the Fourth Proportional to 98,246.13, 135,580.41 and 54,639.30
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Solution
The fourth proportional to 98,246.13, 135,580.41 and 54,639.30 is: 75,402.65
Step by Step Solution
- Step 1: Write the proportion equation
98,246.13 : 135,580.41 = 54,639.30 : x - Step 2: Convert to fraction form
98,246.13/135,580.41 = 54,639.30/x - Step 3: Cross multiply
98,246.13x = 135,580.41 × 54,639.30 - Step 4: Simplify right side
98,246.13x = 7,408,018,392.58 - Step 5: Solve for x
x = 7,408,018,392.58/98,246.13 - Step 6: Final answer
x = 75,402.65
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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.