Finding the Fourth Proportional to 30,818,029.37, 42,460,402.65 and 20,345,393.99
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Solution
The fourth proportional to 30,818,029.37, 42,460,402.65 and 20,345,393.99 is: 28,031,436.10
Step by Step Solution
- Step 1: Write the proportion equation
30,818,029.37 : 42,460,402.65 = 20,345,393.99 : x - Step 2: Convert to fraction form
30,818,029.37/42,460,402.65 = 20,345,393.99/x - Step 3: Cross multiply
30,818,029.37x = 42,460,402.65 × 20,345,393.99 - Step 4: Simplify right side
30,818,029.37x = 863,873,620,888,290 - Step 5: Solve for x
x = 863,873,620,888,290/30,818,029.37 - Step 6: Final answer
x = 28,031,436.10
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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.