Finding the Fourth Proportional to 77,817.64, 107,432.58 and 51,398.44
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Solution
The fourth proportional to 77,817.64, 107,432.58 and 51,398.44 is: 70,959.07
Step by Step Solution
- Step 1: Write the proportion equation
77,817.64 : 107,432.58 = 51,398.44 : x - Step 2: Convert to fraction form
77,817.64/107,432.58 = 51,398.44/x - Step 3: Cross multiply
77,817.64x = 107,432.58 × 51,398.44 - Step 4: Simplify right side
77,817.64x = 5,521,867,017.18 - Step 5: Solve for x
x = 5,521,867,017.18/77,817.64 - Step 6: Final answer
x = 70,959.07
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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.