Finding the Fourth Proportional to 90,502,967.80, 135,754,451.70 and 83,417,087.80
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Solution
The fourth proportional to 90,502,967.80, 135,754,451.70 and 83,417,087.80 is: 125,125,631.70
Step by Step Solution
- Step 1: Write the proportion equation
90,502,967.80 : 135,754,451.70 = 83,417,087.80 : x - Step 2: Convert to fraction form
90,502,967.80/135,754,451.70 = 83,417,087.80/x - Step 3: Cross multiply
90,502,967.80x = 135,754,451.70 × 83,417,087.80 - Step 4: Simplify right side
90,502,967.80x = 11,324,241,016,699,758 - Step 5: Solve for x
x = 11,324,241,016,699,758/90,502,967.80 - Step 6: Final answer
x = 125,125,631.70
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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.