Finding the Fourth Proportional to 76,859.19, 106,066.60 and 42,870.63
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Solution
The fourth proportional to 76,859.19, 106,066.60 and 42,870.63 is: 59,161.99
Step by Step Solution
- Step 1: Write the proportion equation
76,859.19 : 106,066.60 = 42,870.63 : x - Step 2: Convert to fraction form
76,859.19/106,066.60 = 42,870.63/x - Step 3: Cross multiply
76,859.19x = 106,066.60 × 42,870.63 - Step 4: Simplify right side
76,859.19x = 4,547,142,254.53 - Step 5: Solve for x
x = 4,547,142,254.53/76,859.19 - Step 6: Final answer
x = 59,161.99
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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.