Finding the Fourth Proportional to 76,734,164.60, 115,101,246.90 and 66,432,519.80
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Solution
The fourth proportional to 76,734,164.60, 115,101,246.90 and 66,432,519.80 is: 99,648,779.70
Step by Step Solution
- Step 1: Write the proportion equation
76,734,164.60 : 115,101,246.90 = 66,432,519.80 : x - Step 2: Convert to fraction form
76,734,164.60/115,101,246.90 = 66,432,519.80/x - Step 3: Cross multiply
76,734,164.60x = 115,101,246.90 × 66,432,519.80 - Step 4: Simplify right side
76,734,164.60x = 7,646,465,863,688,939 - Step 5: Solve for x
x = 7,646,465,863,688,939/76,734,164.60 - Step 6: Final answer
x = 99,648,779.70
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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.