Finding the Fourth Proportional to 93,416.13, 128,917.11 and 53,135.70
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Solution
The fourth proportional to 93,416.13, 128,917.11 and 53,135.70 is: 73,328.89
Step by Step Solution
- Step 1: Write the proportion equation
93,416.13 : 128,917.11 = 53,135.70 : x - Step 2: Convert to fraction form
93,416.13/128,917.11 = 53,135.70/x - Step 3: Cross multiply
93,416.13x = 128,917.11 × 53,135.70 - Step 4: Simplify right side
93,416.13x = 6,850,100,881.83 - Step 5: Solve for x
x = 6,850,100,881.83/93,416.13 - Step 6: Final answer
x = 73,328.89
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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.