Finding the Fourth Proportional to 93,409.18, 128,903.97 and 53,122.88
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Solution
The fourth proportional to 93,409.18, 128,903.97 and 53,122.88 is: 73,309.18
Step by Step Solution
- Step 1: Write the proportion equation
93,409.18 : 128,903.97 = 53,122.88 : x - Step 2: Convert to fraction form
93,409.18/128,903.97 = 53,122.88/x - Step 3: Cross multiply
93,409.18x = 128,903.97 × 53,122.88 - Step 4: Simplify right side
93,409.18x = 6,847,750,651.30 - Step 5: Solve for x
x = 6,847,750,651.30/93,409.18 - Step 6: Final answer
x = 73,309.18
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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.