Finding the Fourth Proportional to 93,810.56, 129,446.71 and 74,738.70
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Solution
The fourth proportional to 93,810.56, 129,446.71 and 74,738.70 is: 103,129.96
Step by Step Solution
- Step 1: Write the proportion equation
93,810.56 : 129,446.71 = 74,738.70 : x - Step 2: Convert to fraction form
93,810.56/129,446.71 = 74,738.70/x - Step 3: Cross multiply
93,810.56x = 129,446.71 × 74,738.70 - Step 4: Simplify right side
93,810.56x = 9,674,678,637.83 - Step 5: Solve for x
x = 9,674,678,637.83/93,810.56 - Step 6: Final answer
x = 103,129.96
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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.