Finding the Fourth Proportional to 77,930.79, 107,542.35 and 43,938.99
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Solution
The fourth proportional to 77,930.79, 107,542.35 and 43,938.99 is: 60,634.60
Step by Step Solution
- Step 1: Write the proportion equation
77,930.79 : 107,542.35 = 43,938.99 : x - Step 2: Convert to fraction form
77,930.79/107,542.35 = 43,938.99/x - Step 3: Cross multiply
77,930.79x = 107,542.35 × 43,938.99 - Step 4: Simplify right side
77,930.79x = 4,725,302,241.23 - Step 5: Solve for x
x = 4,725,302,241.23/77,930.79 - Step 6: Final answer
x = 60,634.60
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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.