Finding the Fourth Proportional to 85,901.81, 128,821.84 and 29,726.67
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Solution
The fourth proportional to 85,901.81, 128,821.84 and 29,726.67 is: 44,579.32
Step by Step Solution
- Step 1: Write the proportion equation
85,901.81 : 128,821.84 = 29,726.67 : x - Step 2: Convert to fraction form
85,901.81/128,821.84 = 29,726.67/x - Step 3: Cross multiply
85,901.81x = 128,821.84 × 29,726.67 - Step 4: Simplify right side
85,901.81x = 3,829,444,326.47 - Step 5: Solve for x
x = 3,829,444,326.47/85,901.81 - Step 6: Final answer
x = 44,579.32
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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.