Finding the Fourth Proportional to 78,656,272.80, 117,984,409.20 and 65,219,344.80
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Solution
The fourth proportional to 78,656,272.80, 117,984,409.20 and 65,219,344.80 is: 97,829,017.20
Step by Step Solution
- Step 1: Write the proportion equation
78,656,272.80 : 117,984,409.20 = 65,219,344.80 : x - Step 2: Convert to fraction form
78,656,272.80/117,984,409.20 = 65,219,344.80/x - Step 3: Cross multiply
78,656,272.80x = 117,984,409.20 × 65,219,344.80 - Step 4: Simplify right side
78,656,272.80x = 7,694,865,864,639,092 - Step 5: Solve for x
x = 7,694,865,864,639,092/78,656,272.80 - Step 6: Final answer
x = 97,829,017.20
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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.