Finding the Fourth Proportional to 70,901.34, 106,343.76 and 18,306.68
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Solution
The fourth proportional to 70,901.34, 106,343.76 and 18,306.68 is: 27,457.89
Step by Step Solution
- Step 1: Write the proportion equation
70,901.34 : 106,343.76 = 18,306.68 : x - Step 2: Convert to fraction form
70,901.34/106,343.76 = 18,306.68/x - Step 3: Cross multiply
70,901.34x = 106,343.76 × 18,306.68 - Step 4: Simplify right side
70,901.34x = 1,946,801,184.32 - Step 5: Solve for x
x = 1,946,801,184.32/70,901.34 - Step 6: Final answer
x = 27,457.89
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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.