Finding the Fourth Proportional to 74,120.40, 102,285.38 and 40,127.99
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Solution
The fourth proportional to 74,120.40, 102,285.38 and 40,127.99 is: 55,376.20
Step by Step Solution
- Step 1: Write the proportion equation
74,120.40 : 102,285.38 = 40,127.99 : x - Step 2: Convert to fraction form
74,120.40/102,285.38 = 40,127.99/x - Step 3: Cross multiply
74,120.40x = 102,285.38 × 40,127.99 - Step 4: Simplify right side
74,120.40x = 4,104,506,294.68 - Step 5: Solve for x
x = 4,104,506,294.68/74,120.40 - Step 6: Final answer
x = 55,376.20
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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.