Finding the Fourth Proportional to 98,319.78, 135,682.23 and 55,878.62
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Solution
The fourth proportional to 98,319.78, 135,682.23 and 55,878.62 is: 77,113.02
Step by Step Solution
- Step 1: Write the proportion equation
98,319.78 : 135,682.23 = 55,878.62 : x - Step 2: Convert to fraction form
98,319.78/135,682.23 = 55,878.62/x - Step 3: Cross multiply
98,319.78x = 135,682.23 × 55,878.62 - Step 4: Simplify right side
98,319.78x = 7,581,735,092.51 - Step 5: Solve for x
x = 7,581,735,092.51/98,319.78 - Step 6: Final answer
x = 77,113.02
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1.5x scale
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.