Finding the Fourth Proportional to 85,536,043.60, 128,304,065.40 and 40,102,430.80
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Solution
The fourth proportional to 85,536,043.60, 128,304,065.40 and 40,102,430.80 is: 60,153,646.20
Step by Step Solution
- Step 1: Write the proportion equation
85,536,043.60 : 128,304,065.40 = 40,102,430.80 : x - Step 2: Convert to fraction form
85,536,043.60/128,304,065.40 = 40,102,430.80/x - Step 3: Cross multiply
85,536,043.60x = 128,304,065.40 × 40,102,430.80 - Step 4: Simplify right side
85,536,043.60x = 5,145,304,904,062,174 - Step 5: Solve for x
x = 5,145,304,904,062,174/85,536,043.60 - Step 6: Final answer
x = 60,153,646.20
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1.5x scale
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.