Finding the Fourth Proportional to 70,118,781.05, 105,183,458.34 and 20,930,748.80
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Solution
The fourth proportional to 70,118,781.05, 105,183,458.34 and 20,930,748.80 is: 31,397,701.32
Step by Step Solution
- Step 1: Write the proportion equation
70,118,781.05 : 105,183,458.34 = 20,930,748.80 : x - Step 2: Convert to fraction form
70,118,781.05/105,183,458.34 = 20,930,748.80/x - Step 3: Cross multiply
70,118,781.05x = 105,183,458.34 × 20,930,748.80 - Step 4: Simplify right side
70,118,781.05x = 2,201,568,543,903,888 - Step 5: Solve for x
x = 2,201,568,543,903,888/70,118,781.05 - Step 6: Final answer
x = 31,397,701.32
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.