Finding the Fourth Proportional to 81,688,163.60, 122,364,283.80 and 56,158,000.40
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Solution
The fourth proportional to 81,688,163.60, 122,364,283.80 and 56,158,000.40 is: 84,121,532.37
Step by Step Solution
- Step 1: Write the proportion equation
81,688,163.60 : 122,364,283.80 = 56,158,000.40 : x - Step 2: Convert to fraction form
81,688,163.60/122,364,283.80 = 56,158,000.40/x - Step 3: Cross multiply
81,688,163.60x = 122,364,283.80 × 56,158,000.40 - Step 4: Simplify right side
81,688,163.60x = 6,871,733,498,586,113 - Step 5: Solve for x
x = 6,871,733,498,586,113/81,688,163.60 - Step 6: Final answer
x = 84,121,532.37
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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.