Finding the Fourth Proportional to 109,432.74, 164,178.36 and 39,312.66
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Solution
The fourth proportional to 109,432.74, 164,178.36 and 39,312.66 is: 58,979.50
Step by Step Solution
- Step 1: Write the proportion equation
109,432.74 : 164,178.36 = 39,312.66 : x - Step 2: Convert to fraction form
109,432.74/164,178.36 = 39,312.66/x - Step 3: Cross multiply
109,432.74x = 164,178.36 × 39,312.66 - Step 4: Simplify right side
109,432.74x = 6,454,288,046.04 - Step 5: Solve for x
x = 6,454,288,046.04/109,432.74 - Step 6: Final answer
x = 58,979.50
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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.