Finding the Fourth Proportional to 81,126.15, 121,700.75 and 24,970.94
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Solution
The fourth proportional to 81,126.15, 121,700.75 and 24,970.94 is: 37,459.96
Step by Step Solution
- Step 1: Write the proportion equation
81,126.15 : 121,700.75 = 24,970.94 : x - Step 2: Convert to fraction form
81,126.15/121,700.75 = 24,970.94/x - Step 3: Cross multiply
81,126.15x = 121,700.75 × 24,970.94 - Step 4: Simplify right side
81,126.15x = 3,038,982,126.21 - Step 5: Solve for x
x = 3,038,982,126.21/81,126.15 - Step 6: Final answer
x = 37,459.96
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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.