Finding the Fourth Proportional to 80,752,070.80, 121,128,106.20 and 74,516,496.40
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Solution
The fourth proportional to 80,752,070.80, 121,128,106.20 and 74,516,496.40 is: 111,774,744.60
Step by Step Solution
- Step 1: Write the proportion equation
80,752,070.80 : 121,128,106.20 = 74,516,496.40 : x - Step 2: Convert to fraction form
80,752,070.80/121,128,106.20 = 74,516,496.40/x - Step 3: Cross multiply
80,752,070.80x = 121,128,106.20 × 74,516,496.40 - Step 4: Simplify right side
80,752,070.80x = 9,026,042,089,591,118 - Step 5: Solve for x
x = 9,026,042,089,591,118/80,752,070.80 - Step 6: Final answer
x = 111,774,744.60
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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.