Finding the Fourth Proportional to 85,440,354.80, 128,160,532.20 and 27,938,438.60
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Solution
The fourth proportional to 85,440,354.80, 128,160,532.20 and 27,938,438.60 is: 41,907,657.90
Step by Step Solution
- Step 1: Write the proportion equation
85,440,354.80 : 128,160,532.20 = 27,938,438.60 : x - Step 2: Convert to fraction form
85,440,354.80/128,160,532.20 = 27,938,438.60/x - Step 3: Cross multiply
85,440,354.80x = 128,160,532.20 × 27,938,438.60 - Step 4: Simplify right side
85,440,354.80x = 3,580,605,159,813,023 - Step 5: Solve for x
x = 3,580,605,159,813,023/85,440,354.80 - Step 6: Final answer
x = 41,907,657.90
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1.5x scale
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.