Finding the Fourth Proportional to 77,153,353.60, 115,734,462.96 and 27,979,912.48
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Solution
The fourth proportional to 77,153,353.60, 115,734,462.96 and 27,979,912.48 is: 41,971,476.20
Step by Step Solution
- Step 1: Write the proportion equation
77,153,353.60 : 115,734,462.96 = 27,979,912.48 : x - Step 2: Convert to fraction form
77,153,353.60/115,734,462.96 = 27,979,912.48/x - Step 3: Cross multiply
77,153,353.60x = 115,734,462.96 × 27,979,912.48 - Step 4: Simplify right side
77,153,353.60x = 3,238,240,144,540,601.50 - Step 5: Solve for x
x = 3,238,240,144,540,601.50/77,153,353.60 - Step 6: Final answer
x = 41,971,476.20
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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.