Finding the Fourth Proportional to 83,623,466.75, 115,403,662.68 and 57,217,206.80
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Solution
The fourth proportional to 83,623,466.75, 115,403,662.68 and 57,217,206.80 is: 78,961,988.66
Step by Step Solution
- Step 1: Write the proportion equation
83,623,466.75 : 115,403,662.68 = 57,217,206.80 : x - Step 2: Convert to fraction form
83,623,466.75/115,403,662.68 = 57,217,206.80/x - Step 3: Cross multiply
83,623,466.75x = 115,403,662.68 × 57,217,206.80 - Step 4: Simplify right side
83,623,466.75x = 6,603,075,233,039,002 - Step 5: Solve for x
x = 6,603,075,233,039,002/83,623,466.75 - Step 6: Final answer
x = 78,961,988.66
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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.