Finding the Fourth Proportional to 85,414,873.50, 128,326,706.82 and 54,769,494.09
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Solution
The fourth proportional to 85,414,873.50, 128,326,706.82 and 54,769,494.09 is: 82,285,303.75
Step by Step Solution
- Step 1: Write the proportion equation
85,414,873.50 : 128,326,706.82 = 54,769,494.09 : x - Step 2: Convert to fraction form
85,414,873.50/128,326,706.82 = 54,769,494.09/x - Step 3: Cross multiply
85,414,873.50x = 128,326,706.82 × 54,769,494.09 - Step 4: Simplify right side
85,414,873.50x = 7,028,388,810,767,153 - Step 5: Solve for x
x = 7,028,388,810,767,153/85,414,873.50 - Step 6: Final answer
x = 82,285,303.75
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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.