Finding the Fourth Proportional to 30,624,979.76, 42,263,429.12 and 17,574,625.92
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Solution
The fourth proportional to 30,624,979.76, 42,263,429.12 and 17,574,625.92 is: 24,253,532.99
Step by Step Solution
- Step 1: Write the proportion equation
30,624,979.76 : 42,263,429.12 = 17,574,625.92 : x - Step 2: Convert to fraction form
30,624,979.76/42,263,429.12 = 17,574,625.92/x - Step 3: Cross multiply
30,624,979.76x = 42,263,429.12 × 17,574,625.92 - Step 4: Simplify right side
30,624,979.76x = 742,763,956,880,434.88 - Step 5: Solve for x
x = 742,763,956,880,434.88/30,624,979.76 - Step 6: Final answer
x = 24,253,532.99
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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.