Finding the Fourth Proportional to 77,027,580.78, 106,308,961.52 and 47,668,368.75
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Solution
The fourth proportional to 77,027,580.78, 106,308,961.52 and 47,668,368.75 is: 65,789,094.34
Step by Step Solution
- Step 1: Write the proportion equation
77,027,580.78 : 106,308,961.52 = 47,668,368.75 : x - Step 2: Convert to fraction form
77,027,580.78/106,308,961.52 = 47,668,368.75/x - Step 3: Cross multiply
77,027,580.78x = 106,308,961.52 × 47,668,368.75 - Step 4: Simplify right side
77,027,580.78x = 5,067,574,778,752,546 - Step 5: Solve for x
x = 5,067,574,778,752,546/77,027,580.78 - Step 6: Final answer
x = 65,789,094.34
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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.