Finding the Fourth Proportional to 93,409.53, 128,907.98 and 53,129.08
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Solution
The fourth proportional to 93,409.53, 128,907.98 and 53,129.08 is: 73,319.75
Step by Step Solution
- Step 1: Write the proportion equation
93,409.53 : 128,907.98 = 53,129.08 : x - Step 2: Convert to fraction form
93,409.53/128,907.98 = 53,129.08/x - Step 3: Cross multiply
93,409.53x = 128,907.98 × 53,129.08 - Step 4: Simplify right side
93,409.53x = 6,848,762,775.63 - Step 5: Solve for x
x = 6,848,762,775.63/93,409.53 - Step 6: Final answer
x = 73,319.75
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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.