Finding the Fourth Proportional to 81,652,432.95, 122,478,651.45 and 81,652,432.95
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Solution
The fourth proportional to 81,652,432.95, 122,478,651.45 and 81,652,432.95 is: 122,478,651.45
Step by Step Solution
- Step 1: Write the proportion equation
81,652,432.95 : 122,478,651.45 = 81,652,432.95 : x - Step 2: Convert to fraction form
81,652,432.95/122,478,651.45 = 81,652,432.95/x - Step 3: Cross multiply
81,652,432.95x = 122,478,651.45 × 81,652,432.95 - Step 4: Simplify right side
81,652,432.95x = 10,000,679,875,327,546 - Step 5: Solve for x
x = 10,000,679,875,327,546/81,652,432.95 - Step 6: Final answer
x = 122,478,651.45
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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.