Finding the Fourth Proportional to 74,312.17, 102,549.68 and 40,320.72
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Solution
The fourth proportional to 74,312.17, 102,549.68 and 40,320.72 is: 55,641.99
Step by Step Solution
- Step 1: Write the proportion equation
74,312.17 : 102,549.68 = 40,320.72 : x - Step 2: Convert to fraction form
74,312.17/102,549.68 = 40,320.72/x - Step 3: Cross multiply
74,312.17x = 102,549.68 × 40,320.72 - Step 4: Simplify right side
74,312.17x = 4,134,876,882.97 - Step 5: Solve for x
x = 4,134,876,882.97/74,312.17 - Step 6: Final answer
x = 55,641.99
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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.