Finding the Fourth Proportional to 66,565,331.20, 99,798,230.40 and 28,195,436.80
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Solution
The fourth proportional to 66,565,331.20, 99,798,230.40 and 28,195,436.80 is: 42,272,075.38
Step by Step Solution
- Step 1: Write the proportion equation
66,565,331.20 : 99,798,230.40 = 28,195,436.80 : x - Step 2: Convert to fraction form
66,565,331.20/99,798,230.40 = 28,195,436.80/x - Step 3: Cross multiply
66,565,331.20x = 99,798,230.40 × 28,195,436.80 - Step 4: Simplify right side
66,565,331.20x = 2,813,854,697,995,039 - Step 5: Solve for x
x = 2,813,854,697,995,039/66,565,331.20 - Step 6: Final answer
x = 42,272,075.38
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.