Finding the Fourth Proportional to 57,781,351.57, 79,743,309.71 and 31,680,913.93
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Solution
The fourth proportional to 57,781,351.57, 79,743,309.71 and 31,680,913.93 is: 43,722,427.09
Step by Step Solution
- Step 1: Write the proportion equation
57,781,351.57 : 79,743,309.71 = 31,680,913.93 : x - Step 2: Convert to fraction form
57,781,351.57/79,743,309.71 = 31,680,913.93/x - Step 3: Cross multiply
57,781,351.57x = 79,743,309.71 × 31,680,913.93 - Step 4: Simplify right side
57,781,351.57x = 2,526,340,931,415,843 - Step 5: Solve for x
x = 2,526,340,931,415,843/57,781,351.57 - Step 6: Final answer
x = 43,722,427.09
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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.