Finding the Fourth Proportional to 98,548.99, 135,997.74 and 56,107.52
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Solution
The fourth proportional to 98,548.99, 135,997.74 and 56,107.52 is: 77,428.45
Step by Step Solution
- Step 1: Write the proportion equation
98,548.99 : 135,997.74 = 56,107.52 : x - Step 2: Convert to fraction form
98,548.99/135,997.74 = 56,107.52/x - Step 3: Cross multiply
98,548.99x = 135,997.74 × 56,107.52 - Step 4: Simplify right side
98,548.99x = 7,630,495,917.00 - Step 5: Solve for x
x = 7,630,495,917.00/98,548.99 - Step 6: Final answer
x = 77,428.45
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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.