Finding the Fourth Proportional to 85,397,888.58, 128,095,684.70 and 20,702,251.41
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Solution
The fourth proportional to 85,397,888.58, 128,095,684.70 and 20,702,251.41 is: 31,053,098.77
Step by Step Solution
- Step 1: Write the proportion equation
85,397,888.58 : 128,095,684.70 = 20,702,251.41 : x - Step 2: Convert to fraction form
85,397,888.58/128,095,684.70 = 20,702,251.41/x - Step 3: Cross multiply
85,397,888.58x = 128,095,684.70 × 20,702,251.41 - Step 4: Simplify right side
85,397,888.58x = 2,651,869,069,091,979 - Step 5: Solve for x
x = 2,651,869,069,091,979/85,397,888.58 - Step 6: Final answer
x = 31,053,098.77
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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.