Finding the Fourth Proportional to 77,878.08, 107,455.68 and 49,573.44
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Solution
The fourth proportional to 77,878.08, 107,455.68 and 49,573.44 is: 68,401.12
Step by Step Solution
- Step 1: Write the proportion equation
77,878.08 : 107,455.68 = 49,573.44 : x - Step 2: Convert to fraction form
77,878.08/107,455.68 = 49,573.44/x - Step 3: Cross multiply
77,878.08x = 107,455.68 × 49,573.44 - Step 4: Simplify right side
77,878.08x = 5,326,947,705.14 - Step 5: Solve for x
x = 5,326,947,705.14/77,878.08 - Step 6: Final answer
x = 68,401.12
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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.