Finding the Fourth Proportional to 87,781,738.23, 121,138,809.26 and 48,626,051.09
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Solution
The fourth proportional to 87,781,738.23, 121,138,809.26 and 48,626,051.09 is: 67,103,956.31
Step by Step Solution
- Step 1: Write the proportion equation
87,781,738.23 : 121,138,809.26 = 48,626,051.09 : x - Step 2: Convert to fraction form
87,781,738.23/121,138,809.26 = 48,626,051.09/x - Step 3: Cross multiply
87,781,738.23x = 121,138,809.26 × 48,626,051.09 - Step 4: Simplify right side
87,781,738.23x = 5,890,501,927,209,701 - Step 5: Solve for x
x = 5,890,501,927,209,701/87,781,738.23 - Step 6: Final answer
x = 67,103,956.31
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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.