Finding the Fourth Proportional to 87,810,360, 121,220,420.08 and 61,727,236.80
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Solution
The fourth proportional to 87,810,360, 121,220,420.08 and 61,727,236.80 is: 85,213,197.80
Step by Step Solution
- Step 1: Write the proportion equation
87,810,360 : 121,220,420.08 = 61,727,236.80 : x - Step 2: Convert to fraction form
87,810,360/121,220,420.08 = 61,727,236.80/x - Step 3: Cross multiply
87,810,360x = 121,220,420.08 × 61,727,236.80 - Step 4: Simplify right side
87,810,360x = 7,482,601,575,273,634 - Step 5: Solve for x
x = 7,482,601,575,273,634/87,810,360 - Step 6: Final answer
x = 85,213,197.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.