Finding the Fourth Proportional to 77,930.19, 107,473.05 and 51,062.94
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Solution
The fourth proportional to 77,930.19, 107,473.05 and 51,062.94 is: 70,420.59
Step by Step Solution
- Step 1: Write the proportion equation
77,930.19 : 107,473.05 = 51,062.94 : x - Step 2: Convert to fraction form
77,930.19/107,473.05 = 51,062.94/x - Step 3: Cross multiply
77,930.19x = 107,473.05 × 51,062.94 - Step 4: Simplify right side
77,930.19x = 5,487,889,903.77 - Step 5: Solve for x
x = 5,487,889,903.77/77,930.19 - Step 6: Final answer
x = 70,420.59
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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.