Finding the Fourth Proportional to 87,810,376, 121,220,442.16 and 61,727,252.80
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Solution
The fourth proportional to 87,810,376, 121,220,442.16 and 61,727,252.80 is: 85,213,219.88
Step by Step Solution
- Step 1: Write the proportion equation
87,810,376 : 121,220,442.16 = 61,727,252.80 : x - Step 2: Convert to fraction form
87,810,376/121,220,442.16 = 61,727,252.80/x - Step 3: Cross multiply
87,810,376x = 121,220,442.16 × 61,727,252.80 - Step 4: Simplify right side
87,810,376x = 7,482,604,877,738,097 - Step 5: Solve for x
x = 7,482,604,877,738,097/87,810,376 - Step 6: Final answer
x = 85,213,219.88
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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.