Finding the Fourth Proportional to 77,971,302.72, 107,596,909.08 and 43,161,533.28
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Solution
The fourth proportional to 77,971,302.72, 107,596,909.08 and 43,161,533.28 is: 59,560,984.75
Step by Step Solution
- Step 1: Write the proportion equation
77,971,302.72 : 107,596,909.08 = 43,161,533.28 : x - Step 2: Convert to fraction form
77,971,302.72/107,596,909.08 = 43,161,533.28/x - Step 3: Cross multiply
77,971,302.72x = 107,596,909.08 × 43,161,533.28 - Step 4: Simplify right side
77,971,302.72x = 4,644,047,572,081,554 - Step 5: Solve for x
x = 4,644,047,572,081,554/77,971,302.72 - Step 6: Final answer
x = 59,560,984.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.