Finding the Fourth Proportional to 84,495,965.80, 126,743,948.70 and 20,670,557.80
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Solution
The fourth proportional to 84,495,965.80, 126,743,948.70 and 20,670,557.80 is: 31,005,836.70
Step by Step Solution
- Step 1: Write the proportion equation
84,495,965.80 : 126,743,948.70 = 20,670,557.80 : x - Step 2: Convert to fraction form
84,495,965.80/126,743,948.70 = 20,670,557.80/x - Step 3: Cross multiply
84,495,965.80x = 126,743,948.70 × 20,670,557.80 - Step 4: Simplify right side
84,495,965.80x = 2,619,868,117,403,585 - Step 5: Solve for x
x = 2,619,868,117,403,585/84,495,965.80 - Step 6: Final answer
x = 31,005,836.70
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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.