Finding the Fourth Proportional to 77,840.74, 107,400.45 and 47,615.02
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Solution
The fourth proportional to 77,840.74, 107,400.45 and 47,615.02 is: 65,696.63
Step by Step Solution
- Step 1: Write the proportion equation
77,840.74 : 107,400.45 = 47,615.02 : x - Step 2: Convert to fraction form
77,840.74/107,400.45 = 47,615.02/x - Step 3: Cross multiply
77,840.74x = 107,400.45 × 47,615.02 - Step 4: Simplify right side
77,840.74x = 5,113,874,574.76 - Step 5: Solve for x
x = 5,113,874,574.76/77,840.74 - Step 6: Final answer
x = 65,696.63
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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.