Finding the Fourth Proportional to 74,965.19, 112,447.74 and 19,561.19
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Solution
The fourth proportional to 74,965.19, 112,447.74 and 19,561.19 is: 29,341.77
Step by Step Solution
- Step 1: Write the proportion equation
74,965.19 : 112,447.74 = 19,561.19 : x - Step 2: Convert to fraction form
74,965.19/112,447.74 = 19,561.19/x - Step 3: Cross multiply
74,965.19x = 112,447.74 × 19,561.19 - Step 4: Simplify right side
74,965.19x = 2,199,611,607.21 - Step 5: Solve for x
x = 2,199,611,607.21/74,965.19 - Step 6: Final answer
x = 29,341.77
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.