Finding the Fourth Proportional to 93,455.07, 128,984.73 and 55,731.75
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Solution
The fourth proportional to 93,455.07, 128,984.73 and 55,731.75 is: 76,919.79
Step by Step Solution
- Step 1: Write the proportion equation
93,455.07 : 128,984.73 = 55,731.75 : x - Step 2: Convert to fraction form
93,455.07/128,984.73 = 55,731.75/x - Step 3: Cross multiply
93,455.07x = 128,984.73 × 55,731.75 - Step 4: Simplify right side
93,455.07x = 7,188,544,726.18 - Step 5: Solve for x
x = 7,188,544,726.18/93,455.07 - Step 6: Final answer
x = 76,919.79
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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.