Finding the Fourth Proportional to 77,011,733.81, 115,440,531.09 and 38,178,602.99
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Solution
The fourth proportional to 77,011,733.81, 115,440,531.09 and 38,178,602.99 is: 57,229,697.18
Step by Step Solution
- Step 1: Write the proportion equation
77,011,733.81 : 115,440,531.09 = 38,178,602.99 : x - Step 2: Convert to fraction form
77,011,733.81/115,440,531.09 = 38,178,602.99/x - Step 3: Cross multiply
77,011,733.81x = 115,440,531.09 × 38,178,602.99 - Step 4: Simplify right side
77,011,733.81x = 4,407,358,204,862,659.50 - Step 5: Solve for x
x = 4,407,358,204,862,659.50/77,011,733.81 - Step 6: Final answer
x = 57,229,697.18
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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.