Finding the Fourth Proportional to 86,972.08, 130,440.16 and 54,941.44
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Solution
The fourth proportional to 86,972.08, 130,440.16 and 54,941.44 is: 82,400.81
Step by Step Solution
- Step 1: Write the proportion equation
86,972.08 : 130,440.16 = 54,941.44 : x - Step 2: Convert to fraction form
86,972.08/130,440.16 = 54,941.44/x - Step 3: Cross multiply
86,972.08x = 130,440.16 × 54,941.44 - Step 4: Simplify right side
86,972.08x = 7,166,570,224.23 - Step 5: Solve for x
x = 7,166,570,224.23/86,972.08 - Step 6: Final answer
x = 82,400.81
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1.5x scale
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.