Finding the Fourth Proportional to 81,651,337.12, 122,434,478.25 and 38,508,956.74
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Solution
The fourth proportional to 81,651,337.12, 122,434,478.25 and 38,508,956.74 is: 57,743,378.04
Step by Step Solution
- Step 1: Write the proportion equation
81,651,337.12 : 122,434,478.25 = 38,508,956.74 : x - Step 2: Convert to fraction form
81,651,337.12/122,434,478.25 = 38,508,956.74/x - Step 3: Cross multiply
81,651,337.12x = 122,434,478.25 × 38,508,956.74 - Step 4: Simplify right side
81,651,337.12x = 4,714,824,026,413,721 - Step 5: Solve for x
x = 4,714,824,026,413,721/81,651,337.12 - Step 6: Final answer
x = 57,743,378.04
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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.