Finding the Fourth Proportional to 76,507.68, 105,593.14 and 63,740.62
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Solution
The fourth proportional to 76,507.68, 105,593.14 and 63,740.62 is: 87,972.50
Step by Step Solution
- Step 1: Write the proportion equation
76,507.68 : 105,593.14 = 63,740.62 : x - Step 2: Convert to fraction form
76,507.68/105,593.14 = 63,740.62/x - Step 3: Cross multiply
76,507.68x = 105,593.14 × 63,740.62 - Step 4: Simplify right side
76,507.68x = 6,730,572,423.01 - Step 5: Solve for x
x = 6,730,572,423.01/76,507.68 - Step 6: Final answer
x = 87,972.50
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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.