Finding the Fourth Proportional to 85,134.08, 117,485.76 and 47,411.84
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Solution
The fourth proportional to 85,134.08, 117,485.76 and 47,411.84 is: 65,428.75
Step by Step Solution
- Step 1: Write the proportion equation
85,134.08 : 117,485.76 = 47,411.84 : x - Step 2: Convert to fraction form
85,134.08/117,485.76 = 47,411.84/x - Step 3: Cross multiply
85,134.08x = 117,485.76 × 47,411.84 - Step 4: Simplify right side
85,134.08x = 5,570,216,055.40 - Step 5: Solve for x
x = 5,570,216,055.40/85,134.08 - Step 6: Final answer
x = 65,428.75
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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.