Finding the Fourth Proportional to 85,464,948.72, 128,062,988.20 and 66,081,523.98
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Solution
The fourth proportional to 85,464,948.72, 128,062,988.20 and 66,081,523.98 is: 99,018,340.88
Step by Step Solution
- Step 1: Write the proportion equation
85,464,948.72 : 128,062,988.20 = 66,081,523.98 : x - Step 2: Convert to fraction form
85,464,948.72/128,062,988.20 = 66,081,523.98/x - Step 3: Cross multiply
85,464,948.72x = 128,062,988.20 × 66,081,523.98 - Step 4: Simplify right side
85,464,948.72x = 8,462,597,425,880,217 - Step 5: Solve for x
x = 8,462,597,425,880,217/85,464,948.72 - Step 6: Final answer
x = 99,018,340.88
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.