Finding the Fourth Proportional to 77,530,220.58, 106,992,421.94 and 42,724,156.62
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Solution
The fourth proportional to 77,530,220.58, 106,992,421.94 and 42,724,156.62 is: 58,959,731.55
Step by Step Solution
- Step 1: Write the proportion equation
77,530,220.58 : 106,992,421.94 = 42,724,156.62 : x - Step 2: Convert to fraction form
77,530,220.58/106,992,421.94 = 42,724,156.62/x - Step 3: Cross multiply
77,530,220.58x = 106,992,421.94 × 42,724,156.62 - Step 4: Simplify right side
77,530,220.58x = 4,571,160,992,117,684 - Step 5: Solve for x
x = 4,571,160,992,117,684/77,530,220.58 - Step 6: Final answer
x = 58,959,731.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.