Finding the Fourth Proportional to 93,213.99, 128,580.28 and 65,959.38
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Solution
The fourth proportional to 93,213.99, 128,580.28 and 65,959.38 is: 90,985.01
Step by Step Solution
- Step 1: Write the proportion equation
93,213.99 : 128,580.28 = 65,959.38 : x - Step 2: Convert to fraction form
93,213.99/128,580.28 = 65,959.38/x - Step 3: Cross multiply
93,213.99x = 128,580.28 × 65,959.38 - Step 4: Simplify right side
93,213.99x = 8,481,075,384.13 - Step 5: Solve for x
x = 8,481,075,384.13/93,213.99 - Step 6: Final answer
x = 90,985.01
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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.