Finding the Fourth Proportional to 80,878,840.60, 121,318,260.90 and 80,374,955.80
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Solution
The fourth proportional to 80,878,840.60, 121,318,260.90 and 80,374,955.80 is: 120,562,433.70
Step by Step Solution
- Step 1: Write the proportion equation
80,878,840.60 : 121,318,260.90 = 80,374,955.80 : x - Step 2: Convert to fraction form
80,878,840.60/121,318,260.90 = 80,374,955.80/x - Step 3: Cross multiply
80,878,840.60x = 121,318,260.90 × 80,374,955.80 - Step 4: Simplify right side
80,878,840.60x = 9,750,949,857,570,368 - Step 5: Solve for x
x = 9,750,949,857,570,368/80,878,840.60 - Step 6: Final answer
x = 120,562,433.70
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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.