Finding the Fourth Proportional to 81,985.10, 122,977.68 and 63,292.42
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Solution
The fourth proportional to 81,985.10, 122,977.68 and 63,292.42 is: 94,938.65
Step by Step Solution
- Step 1: Write the proportion equation
81,985.10 : 122,977.68 = 63,292.42 : x - Step 2: Convert to fraction form
81,985.10/122,977.68 = 63,292.42/x - Step 3: Cross multiply
81,985.10x = 122,977.68 × 63,292.42 - Step 4: Simplify right side
81,985.10x = 7,783,554,973.19 - Step 5: Solve for x
x = 7,783,554,973.19/81,985.10 - Step 6: Final answer
x = 94,938.65
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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.