Finding the Fourth Proportional to 39,930,871.79, 55,107,123.15 and 22,520,864.63
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Solution
The fourth proportional to 39,930,871.79, 55,107,123.15 and 22,520,864.63 is: 31,080,214.51
Step by Step Solution
- Step 1: Write the proportion equation
39,930,871.79 : 55,107,123.15 = 22,520,864.63 : x - Step 2: Convert to fraction form
39,930,871.79/55,107,123.15 = 22,520,864.63/x - Step 3: Cross multiply
39,930,871.79x = 55,107,123.15 × 22,520,864.63 - Step 4: Simplify right side
39,930,871.79x = 1,241,060,060,832,110.25 - Step 5: Solve for x
x = 1,241,060,060,832,110.25/39,930,871.79 - Step 6: Final answer
x = 31,080,214.51
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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.