Finding the Fourth Proportional to 74,209.36, 102,349.20 and 65,237.68
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Solution
The fourth proportional to 74,209.36, 102,349.20 and 65,237.68 is: 89,975.50
Step by Step Solution
- Step 1: Write the proportion equation
74,209.36 : 102,349.20 = 65,237.68 : x - Step 2: Convert to fraction form
74,209.36/102,349.20 = 65,237.68/x - Step 3: Cross multiply
74,209.36x = 102,349.20 × 65,237.68 - Step 4: Simplify right side
74,209.36x = 6,677,024,357.86 - Step 5: Solve for x
x = 6,677,024,357.86/74,209.36 - Step 6: Final answer
x = 89,975.50
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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.