Finding the Fourth Proportional to 77,813,905.70, 107,313,685.20 and 64,562,102.46
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Solution
The fourth proportional to 77,813,905.70, 107,313,685.20 and 64,562,102.46 is: 89,038,033.46
Step by Step Solution
- Step 1: Write the proportion equation
77,813,905.70 : 107,313,685.20 = 64,562,102.46 : x - Step 2: Convert to fraction form
77,813,905.70/107,313,685.20 = 64,562,102.46/x - Step 3: Cross multiply
77,813,905.70x = 107,313,685.20 × 64,562,102.46 - Step 4: Simplify right side
77,813,905.70x = 6,928,397,139,242,586 - Step 5: Solve for x
x = 6,928,397,139,242,586/77,813,905.70 - Step 6: Final answer
x = 89,038,033.46
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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.