Finding the Fourth Proportional to 81,655,477.80, 122,483,216.70 and 36,217,272.30
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Solution
The fourth proportional to 81,655,477.80, 122,483,216.70 and 36,217,272.30 is: 54,325,908.45
Step by Step Solution
- Step 1: Write the proportion equation
81,655,477.80 : 122,483,216.70 = 36,217,272.30 : x - Step 2: Convert to fraction form
81,655,477.80/122,483,216.70 = 36,217,272.30/x - Step 3: Cross multiply
81,655,477.80x = 122,483,216.70 × 36,217,272.30 - Step 4: Simplify right side
81,655,477.80x = 4,436,008,011,403,807 - Step 5: Solve for x
x = 4,436,008,011,403,807/81,655,477.80 - Step 6: Final answer
x = 54,325,908.45
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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.