Finding the Fourth Proportional to 81,679,459.96, 122,445,033.90 and 40,751,417.08
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Solution
The fourth proportional to 81,679,459.96, 122,445,033.90 and 40,751,417.08 is: 61,090,127.78
Step by Step Solution
- Step 1: Write the proportion equation
81,679,459.96 : 122,445,033.90 = 40,751,417.08 : x - Step 2: Convert to fraction form
81,679,459.96/122,445,033.90 = 40,751,417.08/x - Step 3: Cross multiply
81,679,459.96x = 122,445,033.90 × 40,751,417.08 - Step 4: Simplify right side
81,679,459.96x = 4,989,808,645,833,639 - Step 5: Solve for x
x = 4,989,808,645,833,639/81,679,459.96 - Step 6: Final answer
x = 61,090,127.78
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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.