Finding the Fourth Proportional to 97,921.64, 135,120.90 and 55,471.08
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Solution
The fourth proportional to 97,921.64, 135,120.90 and 55,471.08 is: 76,543.88
Step by Step Solution
- Step 1: Write the proportion equation
97,921.64 : 135,120.90 = 55,471.08 : x - Step 2: Convert to fraction form
97,921.64/135,120.90 = 55,471.08/x - Step 3: Cross multiply
97,921.64x = 135,120.90 × 55,471.08 - Step 4: Simplify right side
97,921.64x = 7,495,302,253.57 - Step 5: Solve for x
x = 7,495,302,253.57/97,921.64 - Step 6: Final answer
x = 76,543.88
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1.5x scale
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.