Finding the Fourth Proportional to 78,440,577.30, 117,660,865.95 and 74,913,383.70
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Solution
The fourth proportional to 78,440,577.30, 117,660,865.95 and 74,913,383.70 is: 112,370,075.55
Step by Step Solution
- Step 1: Write the proportion equation
78,440,577.30 : 117,660,865.95 = 74,913,383.70 : x - Step 2: Convert to fraction form
78,440,577.30/117,660,865.95 = 74,913,383.70/x - Step 3: Cross multiply
78,440,577.30x = 117,660,865.95 × 74,913,383.70 - Step 4: Simplify right side
78,440,577.30x = 8,814,373,597,386,616 - Step 5: Solve for x
x = 8,814,373,597,386,616/78,440,577.30 - Step 6: Final answer
x = 112,370,075.55
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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.