Finding the Fourth Proportional to 90,457,816.70, 135,701,859.40 and 71,026,258.79
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Solution
The fourth proportional to 90,457,816.70, 135,701,859.40 and 71,026,258.79 is: 106,551,271.47
Step by Step Solution
- Step 1: Write the proportion equation
90,457,816.70 : 135,701,859.40 = 71,026,258.79 : x - Step 2: Convert to fraction form
90,457,816.70/135,701,859.40 = 71,026,258.79/x - Step 3: Cross multiply
90,457,816.70x = 135,701,859.40 × 71,026,258.79 - Step 4: Simplify right side
90,457,816.70x = 9,638,395,384,190,284 - Step 5: Solve for x
x = 9,638,395,384,190,284/90,457,816.70 - Step 6: Final answer
x = 106,551,271.47
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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.