Finding the Fourth Proportional to 7,127,981.21, 9,836,005.86 and 4,030,352.68
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Solution
The fourth proportional to 7,127,981.21, 9,836,005.86 and 4,030,352.68 is: 5,561,542.80
Step by Step Solution
- Step 1: Write the proportion equation
7,127,981.21 : 9,836,005.86 = 4,030,352.68 : x - Step 2: Convert to fraction form
7,127,981.21/9,836,005.86 = 4,030,352.68/x - Step 3: Cross multiply
7,127,981.21x = 9,836,005.86 × 4,030,352.68 - Step 4: Simplify right side
7,127,981.21x = 39,642,572,578,346.70 - Step 5: Solve for x
x = 39,642,572,578,346.70/7,127,981.21 - Step 6: Final answer
x = 5,561,542.80
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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.