Finding the Fourth Proportional to 93,431.84, 128,938.66 and 50,993.12
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Solution
The fourth proportional to 93,431.84, 128,938.66 and 50,993.12 is: 70,371.99
Step by Step Solution
- Step 1: Write the proportion equation
93,431.84 : 128,938.66 = 50,993.12 : x - Step 2: Convert to fraction form
93,431.84/128,938.66 = 50,993.12/x - Step 3: Cross multiply
93,431.84x = 128,938.66 × 50,993.12 - Step 4: Simplify right side
93,431.84x = 6,574,984,562.02 - Step 5: Solve for x
x = 6,574,984,562.02/93,431.84 - Step 6: Final answer
x = 70,371.99
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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.