Finding the Fourth Proportional to 81,004.84, 121,501.86 and 38,915.08
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Solution
The fourth proportional to 81,004.84, 121,501.86 and 38,915.08 is: 58,370.03
Step by Step Solution
- Step 1: Write the proportion equation
81,004.84 : 121,501.86 = 38,915.08 : x - Step 2: Convert to fraction form
81,004.84/121,501.86 = 38,915.08/x - Step 3: Cross multiply
81,004.84x = 121,501.86 × 38,915.08 - Step 4: Simplify right side
81,004.84x = 4,728,254,602.05 - Step 5: Solve for x
x = 4,728,254,602.05/81,004.84 - Step 6: Final answer
x = 58,370.03
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.