Finding the Fourth Proportional to 39,871,829.32, 55,023,115.98 and 21,537,115
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Solution
The fourth proportional to 39,871,829.32, 55,023,115.98 and 21,537,115 is: 29,721,214.12
Step by Step Solution
- Step 1: Write the proportion equation
39,871,829.32 : 55,023,115.98 = 21,537,115 : x - Step 2: Convert to fraction form
39,871,829.32/55,023,115.98 = 21,537,115/x - Step 3: Cross multiply
39,871,829.32x = 55,023,115.98 × 21,537,115 - Step 4: Simplify right side
39,871,829.32x = 1,185,039,176,519,597.75 - Step 5: Solve for x
x = 1,185,039,176,519,597.75/39,871,829.32 - Step 6: Final answer
x = 29,721,214.12
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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.