Finding the Fourth Proportional to 85,511.40, 128,281.14 and 26,347.08
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Solution
The fourth proportional to 85,511.40, 128,281.14 and 26,347.08 is: 39,524.95
Step by Step Solution
- Step 1: Write the proportion equation
85,511.40 : 128,281.14 = 26,347.08 : x - Step 2: Convert to fraction form
85,511.40/128,281.14 = 26,347.08/x - Step 3: Cross multiply
85,511.40x = 128,281.14 × 26,347.08 - Step 4: Simplify right side
85,511.40x = 3,379,833,458.07 - Step 5: Solve for x
x = 3,379,833,458.07/85,511.40 - Step 6: Final answer
x = 39,524.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.