Finding the Fourth Proportional to 74,119.23, 102,283.80 and 40,126.82
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Solution
The fourth proportional to 74,119.23, 102,283.80 and 40,126.82 is: 55,374.61
Step by Step Solution
- Step 1: Write the proportion equation
74,119.23 : 102,283.80 = 40,126.82 : x - Step 2: Convert to fraction form
74,119.23/102,283.80 = 40,126.82/x - Step 3: Cross multiply
74,119.23x = 102,283.80 × 40,126.82 - Step 4: Simplify right side
74,119.23x = 4,104,323,631.52 - Step 5: Solve for x
x = 4,104,323,631.52/74,119.23 - Step 6: Final answer
x = 55,374.61
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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.