Finding the Fourth Proportional to 68,639.16, 102,771.48 and 51,948.71
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Solution
The fourth proportional to 68,639.16, 102,771.48 and 51,948.71 is: 77,781.34
Step by Step Solution
- Step 1: Write the proportion equation
68,639.16 : 102,771.48 = 51,948.71 : x - Step 2: Convert to fraction form
68,639.16/102,771.48 = 51,948.71/x - Step 3: Cross multiply
68,639.16x = 102,771.48 × 51,948.71 - Step 4: Simplify right side
68,639.16x = 5,338,845,877.13 - Step 5: Solve for x
x = 5,338,845,877.13/68,639.16 - Step 6: Final answer
x = 77,781.34
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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.