Finding the Fourth Proportional to 85,210.12, 117,652.56 and 55,013.08
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Solution
The fourth proportional to 85,210.12, 117,652.56 and 55,013.08 is: 75,958.46
Step by Step Solution
- Step 1: Write the proportion equation
85,210.12 : 117,652.56 = 55,013.08 : x - Step 2: Convert to fraction form
85,210.12/117,652.56 = 55,013.08/x - Step 3: Cross multiply
85,210.12x = 117,652.56 × 55,013.08 - Step 4: Simplify right side
85,210.12x = 6,472,429,695.48 - Step 5: Solve for x
x = 6,472,429,695.48/85,210.12 - Step 6: Final answer
x = 75,958.46
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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.