Finding the Fourth Proportional to 76,766.99, 115,150.49 and 29,987.06
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Solution
The fourth proportional to 76,766.99, 115,150.49 and 29,987.06 is: 44,980.59
Step by Step Solution
- Step 1: Write the proportion equation
76,766.99 : 115,150.49 = 29,987.06 : x - Step 2: Convert to fraction form
76,766.99/115,150.49 = 29,987.06/x - Step 3: Cross multiply
76,766.99x = 115,150.49 × 29,987.06 - Step 4: Simplify right side
76,766.99x = 3,453,024,652.66 - Step 5: Solve for x
x = 3,453,024,652.66/76,766.99 - Step 6: Final answer
x = 44,980.59
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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.