Finding the Fourth Proportional to 316,644.01, 474,966.96 and 76,756.96
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Solution
The fourth proportional to 316,644.01, 474,966.96 and 76,756.96 is: 115,135.66
Step by Step Solution
- Step 1: Write the proportion equation
316,644.01 : 474,966.96 = 76,756.96 : x - Step 2: Convert to fraction form
316,644.01/474,966.96 = 76,756.96/x - Step 3: Cross multiply
316,644.01x = 474,966.96 × 76,756.96 - Step 4: Simplify right side
316,644.01x = 36,457,017,575.21 - Step 5: Solve for x
x = 36,457,017,575.21/316,644.01 - Step 6: Final answer
x = 115,135.66
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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.