Finding the Fourth Proportional to 77,125.36, 115,368.14 and 72,401.44
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Solution
The fourth proportional to 77,125.36, 115,368.14 and 72,401.44 is: 108,301.85
Step by Step Solution
- Step 1: Write the proportion equation
77,125.36 : 115,368.14 = 72,401.44 : x - Step 2: Convert to fraction form
77,125.36/115,368.14 = 72,401.44/x - Step 3: Cross multiply
77,125.36x = 115,368.14 × 72,401.44 - Step 4: Simplify right side
77,125.36x = 8,352,819,466.12 - Step 5: Solve for x
x = 8,352,819,466.12/77,125.36 - Step 6: Final answer
x = 108,301.85
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1.5x scale
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.