Finding the Fourth Proportional to 81,946.27, 122,995.95 and 42,531.06
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Solution
The fourth proportional to 81,946.27, 122,995.95 and 42,531.06 is: 63,836.32
Step by Step Solution
- Step 1: Write the proportion equation
81,946.27 : 122,995.95 = 42,531.06 : x - Step 2: Convert to fraction form
81,946.27/122,995.95 = 42,531.06/x - Step 3: Cross multiply
81,946.27x = 122,995.95 × 42,531.06 - Step 4: Simplify right side
81,946.27x = 5,231,148,129.21 - Step 5: Solve for x
x = 5,231,148,129.21/81,946.27 - Step 6: Final answer
x = 63,836.32
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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.