Finding the Fourth Proportional to 75,276.70, 112,915.08 and 19,121.02
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Solution
The fourth proportional to 75,276.70, 112,915.08 and 19,121.02 is: 28,681.54
Step by Step Solution
- Step 1: Write the proportion equation
75,276.70 : 112,915.08 = 19,121.02 : x - Step 2: Convert to fraction form
75,276.70/112,915.08 = 19,121.02/x - Step 3: Cross multiply
75,276.70x = 112,915.08 × 19,121.02 - Step 4: Simplify right side
75,276.70x = 2,159,051,502.98 - Step 5: Solve for x
x = 2,159,051,502.98/75,276.70 - Step 6: Final answer
x = 28,681.54
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.