Finding the Fourth Proportional to 81,207,122.40, 121,810,683.60 and 62,075,246.40
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Solution
The fourth proportional to 81,207,122.40, 121,810,683.60 and 62,075,246.40 is: 93,112,869.60
Step by Step Solution
- Step 1: Write the proportion equation
81,207,122.40 : 121,810,683.60 = 62,075,246.40 : x - Step 2: Convert to fraction form
81,207,122.40/121,810,683.60 = 62,075,246.40/x - Step 3: Cross multiply
81,207,122.40x = 121,810,683.60 × 62,075,246.40 - Step 4: Simplify right side
81,207,122.40x = 7,561,428,198,622,438 - Step 5: Solve for x
x = 7,561,428,198,622,438/81,207,122.40 - Step 6: Final answer
x = 93,112,869.60
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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.