Finding the Fourth Proportional to 70,930.91, 106,421.76 and 30,387.41
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Solution
The fourth proportional to 70,930.91, 106,421.76 and 30,387.41 is: 45,591.99
Step by Step Solution
- Step 1: Write the proportion equation
70,930.91 : 106,421.76 = 30,387.41 : x - Step 2: Convert to fraction form
70,930.91/106,421.76 = 30,387.41/x - Step 3: Cross multiply
70,930.91x = 106,421.76 × 30,387.41 - Step 4: Simplify right side
70,930.91x = 3,233,881,121.93 - Step 5: Solve for x
x = 3,233,881,121.93/70,930.91 - Step 6: Final answer
x = 45,591.99
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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.