Finding the Fourth Proportional to 90,457,822.71, 135,701,868.39 and 71,026,264.80
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Solution
The fourth proportional to 90,457,822.71, 135,701,868.39 and 71,026,264.80 is: 106,551,280.47
Step by Step Solution
- Step 1: Write the proportion equation
90,457,822.71 : 135,701,868.39 = 71,026,264.80 : x - Step 2: Convert to fraction form
90,457,822.71/135,701,868.39 = 71,026,264.80/x - Step 3: Cross multiply
90,457,822.71x = 135,701,868.39 × 71,026,264.80 - Step 4: Simplify right side
90,457,822.71x = 9,638,396,838,122,888 - Step 5: Solve for x
x = 9,638,396,838,122,888/90,457,822.71 - Step 6: Final answer
x = 106,551,280.47
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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.