Finding the Fourth Proportional to 77,226.21, 106,547.40 and 43,229.70
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Solution
The fourth proportional to 77,226.21, 106,547.40 and 43,229.70 is: 59,643.12
Step by Step Solution
- Step 1: Write the proportion equation
77,226.21 : 106,547.40 = 43,229.70 : x - Step 2: Convert to fraction form
77,226.21/106,547.40 = 43,229.70/x - Step 3: Cross multiply
77,226.21x = 106,547.40 × 43,229.70 - Step 4: Simplify right side
77,226.21x = 4,606,012,137.78 - Step 5: Solve for x
x = 4,606,012,137.78/77,226.21 - Step 6: Final answer
x = 59,643.12
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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.