Finding the Fourth Proportional to 39,974,709.68, 55,165,275.41 and 21,639,995.18
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Solution
The fourth proportional to 39,974,709.68, 55,165,275.41 and 21,639,995.18 is: 29,863,288.65
Step by Step Solution
- Step 1: Write the proportion equation
39,974,709.68 : 55,165,275.41 = 21,639,995.18 : x - Step 2: Convert to fraction form
39,974,709.68/55,165,275.41 = 21,639,995.18/x - Step 3: Cross multiply
39,974,709.68x = 55,165,275.41 × 21,639,995.18 - Step 4: Simplify right side
39,974,709.68x = 1,193,776,293,591,746.25 - Step 5: Solve for x
x = 1,193,776,293,591,746.25/39,974,709.68 - Step 6: Final answer
x = 29,863,288.65
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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.