Finding the Fourth Proportional to 90,586,966.80, 135,746,079.84 and 66,534,865.68
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Solution
The fourth proportional to 90,586,966.80, 135,746,079.84 and 66,534,865.68 is: 99,703,605.36
Step by Step Solution
- Step 1: Write the proportion equation
90,586,966.80 : 135,746,079.84 = 66,534,865.68 : x - Step 2: Convert to fraction form
90,586,966.80/135,746,079.84 = 66,534,865.68/x - Step 3: Cross multiply
90,586,966.80x = 135,746,079.84 × 66,534,865.68 - Step 4: Simplify right side
90,586,966.80x = 9,031,847,188,740,956 - Step 5: Solve for x
x = 9,031,847,188,740,956/90,586,966.80 - Step 6: Final answer
x = 99,703,605.36
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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.