Finding the Fourth Proportional to 81,393,566.40, 122,090,349.60 and 55,565,533.80
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Solution
The fourth proportional to 81,393,566.40, 122,090,349.60 and 55,565,533.80 is: 83,348,300.70
Step by Step Solution
- Step 1: Write the proportion equation
81,393,566.40 : 122,090,349.60 = 55,565,533.80 : x - Step 2: Convert to fraction form
81,393,566.40/122,090,349.60 = 55,565,533.80/x - Step 3: Cross multiply
81,393,566.40x = 122,090,349.60 × 55,565,533.80 - Step 4: Simplify right side
81,393,566.40x = 6,784,015,447,352,616 - Step 5: Solve for x
x = 6,784,015,447,352,616/81,393,566.40 - Step 6: Final answer
x = 83,348,300.70
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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.