Finding the Fourth Proportional to 74,347.05, 102,599.01 and 40,355.54
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Solution
The fourth proportional to 74,347.05, 102,599.01 and 40,355.54 is: 55,690.68
Step by Step Solution
- Step 1: Write the proportion equation
74,347.05 : 102,599.01 = 40,355.54 : x - Step 2: Convert to fraction form
74,347.05/102,599.01 = 40,355.54/x - Step 3: Cross multiply
74,347.05x = 102,599.01 × 40,355.54 - Step 4: Simplify right side
74,347.05x = 4,140,437,939.02 - Step 5: Solve for x
x = 4,140,437,939.02/74,347.05 - Step 6: Final answer
x = 55,690.68
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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.