Finding the Fourth Proportional to 90,457.05, 124,812.09 and 52,215.99
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Solution
The fourth proportional to 90,457.05, 124,812.09 and 52,215.99 is: 72,047.31
Step by Step Solution
- Step 1: Write the proportion equation
90,457.05 : 124,812.09 = 52,215.99 : x - Step 2: Convert to fraction form
90,457.05/124,812.09 = 52,215.99/x - Step 3: Cross multiply
90,457.05x = 124,812.09 × 52,215.99 - Step 4: Simplify right side
90,457.05x = 6,517,187,077.34 - Step 5: Solve for x
x = 6,517,187,077.34/90,457.05 - Step 6: Final answer
x = 72,047.31
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1.5x scale
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.