Finding the Fourth Proportional to 84,985,887.30, 127,478,830.95 and 77,900,007.30
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Solution
The fourth proportional to 84,985,887.30, 127,478,830.95 and 77,900,007.30 is: 116,850,010.95
Step by Step Solution
- Step 1: Write the proportion equation
84,985,887.30 : 127,478,830.95 = 77,900,007.30 : x - Step 2: Convert to fraction form
84,985,887.30/127,478,830.95 = 77,900,007.30/x - Step 3: Cross multiply
84,985,887.30x = 127,478,830.95 × 77,900,007.30 - Step 4: Simplify right side
84,985,887.30x = 9,930,601,861,600,466 - Step 5: Solve for x
x = 9,930,601,861,600,466/84,985,887.30 - Step 6: Final answer
x = 116,850,010.95
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1.5x scale
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.