Finding the Fourth Proportional to 80,842,064.40, 121,280,811.30 and 39,921,107.40
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Solution
The fourth proportional to 80,842,064.40, 121,280,811.30 and 39,921,107.40 is: 59,890,408.90
Step by Step Solution
- Step 1: Write the proportion equation
80,842,064.40 : 121,280,811.30 = 39,921,107.40 : x - Step 2: Convert to fraction form
80,842,064.40/121,280,811.30 = 39,921,107.40/x - Step 3: Cross multiply
80,842,064.40x = 121,280,811.30 × 39,921,107.40 - Step 4: Simplify right side
80,842,064.40x = 4,841,664,293,466,433 - Step 5: Solve for x
x = 4,841,664,293,466,433/80,842,064.40 - Step 6: Final answer
x = 59,890,408.90
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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.