Finding the Fourth Proportional to 74,248.80, 111,778.08 and 67,716.96
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Solution
The fourth proportional to 74,248.80, 111,778.08 and 67,716.96 is: 101,944.70
Step by Step Solution
- Step 1: Write the proportion equation
74,248.80 : 111,778.08 = 67,716.96 : x - Step 2: Convert to fraction form
74,248.80/111,778.08 = 67,716.96/x - Step 3: Cross multiply
74,248.80x = 111,778.08 × 67,716.96 - Step 4: Simplify right side
74,248.80x = 7,569,271,772.24 - Step 5: Solve for x
x = 7,569,271,772.24/74,248.80 - Step 6: Final answer
x = 101,944.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.