Finding the Fourth Proportional to 80,128,991.92, 119,519,793.06 and 72,772,935.07
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Solution
The fourth proportional to 80,128,991.92, 119,519,793.06 and 72,772,935.07 is: 108,547,554.77
Step by Step Solution
- Step 1: Write the proportion equation
80,128,991.92 : 119,519,793.06 = 72,772,935.07 : x - Step 2: Convert to fraction form
80,128,991.92/119,519,793.06 = 72,772,935.07/x - Step 3: Cross multiply
80,128,991.92x = 119,519,793.06 × 72,772,935.07 - Step 4: Simplify right side
80,128,991.92x = 8,697,806,138,973,753 - Step 5: Solve for x
x = 8,697,806,138,973,753/80,128,991.92 - Step 6: Final answer
x = 108,547,554.77
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.