Finding the Fourth Proportional to 138,440,476.80, 207,660,715.20 and 57,650,947.20
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Solution
The fourth proportional to 138,440,476.80, 207,660,715.20 and 57,650,947.20 is: 86,476,420.80
Step by Step Solution
- Step 1: Write the proportion equation
138,440,476.80 : 207,660,715.20 = 57,650,947.20 : x - Step 2: Convert to fraction form
138,440,476.80/207,660,715.20 = 57,650,947.20/x - Step 3: Cross multiply
138,440,476.80x = 207,660,715.20 × 57,650,947.20 - Step 4: Simplify right side
138,440,476.80x = 11,971,836,927,509,438 - Step 5: Solve for x
x = 11,971,836,927,509,438/138,440,476.80 - Step 6: Final answer
x = 86,476,420.80
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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.