Finding the Fourth Proportional to 97,920.64, 135,119.52 and 55,470.08
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Solution
The fourth proportional to 97,920.64, 135,119.52 and 55,470.08 is: 76,542.50
Step by Step Solution
- Step 1: Write the proportion equation
97,920.64 : 135,119.52 = 55,470.08 : x - Step 2: Convert to fraction form
97,920.64/135,119.52 = 55,470.08/x - Step 3: Cross multiply
97,920.64x = 135,119.52 × 55,470.08 - Step 4: Simplify right side
97,920.64x = 7,495,090,583.96 - Step 5: Solve for x
x = 7,495,090,583.96/97,920.64 - Step 6: Final answer
x = 76,542.50
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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.