Finding the Fourth Proportional to 30,842,349.99, 42,560,982.80 and 18,459,266.21
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Solution
The fourth proportional to 30,842,349.99, 42,560,982.80 and 18,459,266.21 is: 25,472,913.44
Step by Step Solution
- Step 1: Write the proportion equation
30,842,349.99 : 42,560,982.80 = 18,459,266.21 : x - Step 2: Convert to fraction form
30,842,349.99/42,560,982.80 = 18,459,266.21/x - Step 3: Cross multiply
30,842,349.99x = 42,560,982.80 × 18,459,266.21 - Step 4: Simplify right side
30,842,349.99x = 785,644,511,588,155.75 - Step 5: Solve for x
x = 785,644,511,588,155.75/30,842,349.99 - Step 6: Final answer
x = 25,472,913.44
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1.5x scale
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.