Finding the Fourth Proportional to 30,767,327.80, 42,471,985.80 and 19,170,620.98
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Solution
The fourth proportional to 30,767,327.80, 42,471,985.80 and 19,170,620.98 is: 26,463,602.80
Step by Step Solution
- Step 1: Write the proportion equation
30,767,327.80 : 42,471,985.80 = 19,170,620.98 : x - Step 2: Convert to fraction form
30,767,327.80/42,471,985.80 = 19,170,620.98/x - Step 3: Cross multiply
30,767,327.80x = 42,471,985.80 × 19,170,620.98 - Step 4: Simplify right side
30,767,327.80x = 814,214,342,039,742 - Step 5: Solve for x
x = 814,214,342,039,742/30,767,327.80 - Step 6: Final answer
x = 26,463,602.80
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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.