Finding the Fourth Proportional to 85,424.84, 128,134.07 and 26,258.99
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Solution
The fourth proportional to 85,424.84, 128,134.07 and 26,258.99 is: 39,387.49
Step by Step Solution
- Step 1: Write the proportion equation
85,424.84 : 128,134.07 = 26,258.99 : x - Step 2: Convert to fraction form
85,424.84/128,134.07 = 26,258.99/x - Step 3: Cross multiply
85,424.84x = 128,134.07 × 26,258.99 - Step 4: Simplify right side
85,424.84x = 3,364,670,589.30 - Step 5: Solve for x
x = 3,364,670,589.30/85,424.84 - Step 6: Final answer
x = 39,387.49
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Half scale
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Double scale
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Similar ratio
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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.