Finding the Fourth Proportional to 73,878.20, 110,817.30 and 65,421.80
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Solution
The fourth proportional to 73,878.20, 110,817.30 and 65,421.80 is: 98,132.70
Step by Step Solution
- Step 1: Write the proportion equation
73,878.20 : 110,817.30 = 65,421.80 : x - Step 2: Convert to fraction form
73,878.20/110,817.30 = 65,421.80/x - Step 3: Cross multiply
73,878.20x = 110,817.30 × 65,421.80 - Step 4: Simplify right side
73,878.20x = 7,249,867,237.14 - Step 5: Solve for x
x = 7,249,867,237.14/73,878.20 - Step 6: Final answer
x = 98,132.70
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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.