Finding the Fourth Proportional to 74,122.56, 102,220.56 and 65,593.08
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Solution
The fourth proportional to 74,122.56, 102,220.56 and 65,593.08 is: 90,457.77
Step by Step Solution
- Step 1: Write the proportion equation
74,122.56 : 102,220.56 = 65,593.08 : x - Step 2: Convert to fraction form
74,122.56/102,220.56 = 65,593.08/x - Step 3: Cross multiply
74,122.56x = 102,220.56 × 65,593.08 - Step 4: Simplify right side
74,122.56x = 6,704,961,369.72 - Step 5: Solve for x
x = 6,704,961,369.72/74,122.56 - Step 6: Final answer
x = 90,457.77
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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.