Finding the Fourth Proportional to 74,545.56, 102,549.78 and 65,431.44
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Solution
The fourth proportional to 74,545.56, 102,549.78 and 65,431.44 is: 90,011.80
Step by Step Solution
- Step 1: Write the proportion equation
74,545.56 : 102,549.78 = 65,431.44 : x - Step 2: Convert to fraction form
74,545.56/102,549.78 = 65,431.44/x - Step 3: Cross multiply
74,545.56x = 102,549.78 × 65,431.44 - Step 4: Simplify right side
74,545.56x = 6,709,979,777.08 - Step 5: Solve for x
x = 6,709,979,777.08/74,545.56 - Step 6: Final answer
x = 90,011.80
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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.