Finding the Fourth Proportional to 66,305,153.70, 90,838,501.76 and 63,819,986.31
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Solution
The fourth proportional to 66,305,153.70, 90,838,501.76 and 63,819,986.31 is: 87,433,805.89
Step by Step Solution
- Step 1: Write the proportion equation
66,305,153.70 : 90,838,501.76 = 63,819,986.31 : x - Step 2: Convert to fraction form
66,305,153.70/90,838,501.76 = 63,819,986.31/x - Step 3: Cross multiply
66,305,153.70x = 90,838,501.76 × 63,819,986.31 - Step 4: Simplify right side
66,305,153.70x = 5,797,311,938,425,011 - Step 5: Solve for x
x = 5,797,311,938,425,011/66,305,153.70 - Step 6: Final answer
x = 87,433,805.89
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.