Finding the Fourth Proportional to 90,407.85, 124,766.94 and 51,649.09
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Solution
The fourth proportional to 90,407.85, 124,766.94 and 51,649.09 is: 71,278.09
Step by Step Solution
- Step 1: Write the proportion equation
90,407.85 : 124,766.94 = 51,649.09 : x - Step 2: Convert to fraction form
90,407.85/124,766.94 = 51,649.09/x - Step 3: Cross multiply
90,407.85x = 124,766.94 × 51,649.09 - Step 4: Simplify right side
90,407.85x = 6,444,098,913.08 - Step 5: Solve for x
x = 6,444,098,913.08/90,407.85 - Step 6: Final answer
x = 71,278.09
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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.