Finding the Fourth Proportional to 42,118,947, 63,170,430.66 and 20,531,837.88
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Solution
The fourth proportional to 42,118,947, 63,170,430.66 and 20,531,837.88 is: 30,793,861.99
Step by Step Solution
- Step 1: Write the proportion equation
42,118,947 : 63,170,430.66 = 20,531,837.88 : x - Step 2: Convert to fraction form
42,118,947/63,170,430.66 = 20,531,837.88/x - Step 3: Cross multiply
42,118,947x = 63,170,430.66 × 20,531,837.88 - Step 4: Simplify right side
42,118,947x = 1,297,005,041,120,901.25 - Step 5: Solve for x
x = 1,297,005,041,120,901.25/42,118,947 - Step 6: Final answer
x = 30,793,861.99
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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.