Finding the Fourth Proportional to 76,628,519.60, 114,942,779.40 and 68,314,420.40
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Solution
The fourth proportional to 76,628,519.60, 114,942,779.40 and 68,314,420.40 is: 102,471,630.60
Step by Step Solution
- Step 1: Write the proportion equation
76,628,519.60 : 114,942,779.40 = 68,314,420.40 : x - Step 2: Convert to fraction form
76,628,519.60/114,942,779.40 = 68,314,420.40/x - Step 3: Cross multiply
76,628,519.60x = 114,942,779.40 × 68,314,420.40 - Step 4: Simplify right side
76,628,519.60x = 7,852,249,353,876,061 - Step 5: Solve for x
x = 7,852,249,353,876,061/76,628,519.60 - Step 6: Final answer
x = 102,471,630.60
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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.