Finding the Fourth Proportional to 78,098.99, 117,133.64 and 38,077.80
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Solution
The fourth proportional to 78,098.99, 117,133.64 and 38,077.80 is: 57,109.46
Step by Step Solution
- Step 1: Write the proportion equation
78,098.99 : 117,133.64 = 38,077.80 : x - Step 2: Convert to fraction form
78,098.99/117,133.64 = 38,077.80/x - Step 3: Cross multiply
78,098.99x = 117,133.64 × 38,077.80 - Step 4: Simplify right side
78,098.99x = 4,460,191,044.53 - Step 5: Solve for x
x = 4,460,191,044.53/78,098.99 - Step 6: Final answer
x = 57,109.46
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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.