Finding the Fourth Proportional to 39,020,312.84, 53,851,338.47 and 21,622,115.48
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Solution
The fourth proportional to 39,020,312.84, 53,851,338.47 and 21,622,115.48 is: 29,840,351.72
Step by Step Solution
- Step 1: Write the proportion equation
39,020,312.84 : 53,851,338.47 = 21,622,115.48 : x - Step 2: Convert to fraction form
39,020,312.84/53,851,338.47 = 21,622,115.48/x - Step 3: Cross multiply
39,020,312.84x = 53,851,338.47 × 21,622,115.48 - Step 4: Simplify right side
39,020,312.84x = 1,164,379,859,238,618.75 - Step 5: Solve for x
x = 1,164,379,859,238,618.75/39,020,312.84 - Step 6: Final answer
x = 29,840,351.72
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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.