Finding the Fourth Proportional to 76,864.14, 115,303.10 and 20,702.99
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Solution
The fourth proportional to 76,864.14, 115,303.10 and 20,702.99 is: 31,056.34
Step by Step Solution
- Step 1: Write the proportion equation
76,864.14 : 115,303.10 = 20,702.99 : x - Step 2: Convert to fraction form
76,864.14/115,303.10 = 20,702.99/x - Step 3: Cross multiply
76,864.14x = 115,303.10 × 20,702.99 - Step 4: Simplify right side
76,864.14x = 2,387,119,111.01 - Step 5: Solve for x
x = 2,387,119,111.01/76,864.14 - Step 6: Final answer
x = 31,056.34
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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.