Finding the Fourth Proportional to 81,688,511.48, 122,532,767.21 and 75,452,937.08
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Solution
The fourth proportional to 81,688,511.48, 122,532,767.21 and 75,452,937.08 is: 113,179,405.61
Step by Step Solution
- Step 1: Write the proportion equation
81,688,511.48 : 122,532,767.21 = 75,452,937.08 : x - Step 2: Convert to fraction form
81,688,511.48/122,532,767.21 = 75,452,937.08/x - Step 3: Cross multiply
81,688,511.48x = 122,532,767.21 × 75,452,937.08 - Step 4: Simplify right side
81,688,511.48x = 9,245,457,174,110,386 - Step 5: Solve for x
x = 9,245,457,174,110,386/81,688,511.48 - Step 6: Final answer
x = 113,179,405.61
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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.