Finding the Fourth Proportional to 77,854.08, 107,438.63 and 42,044.09
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Solution
The fourth proportional to 77,854.08, 107,438.63 and 42,044.09 is: 58,020.84
Step by Step Solution
- Step 1: Write the proportion equation
77,854.08 : 107,438.63 = 42,044.09 : x - Step 2: Convert to fraction form
77,854.08/107,438.63 = 42,044.09/x - Step 3: Cross multiply
77,854.08x = 107,438.63 × 42,044.09 - Step 4: Simplify right side
77,854.08x = 4,517,159,429.20 - Step 5: Solve for x
x = 4,517,159,429.20/77,854.08 - Step 6: Final answer
x = 58,020.84
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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.