Finding the Fourth Proportional to 20,718,005.19, 31,068,457.49 and 7,072,250.68
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Solution
The fourth proportional to 20,718,005.19, 31,068,457.49 and 7,072,250.68 is: 10,605,457.32
Step by Step Solution
- Step 1: Write the proportion equation
20,718,005.19 : 31,068,457.49 = 7,072,250.68 : x - Step 2: Convert to fraction form
20,718,005.19/31,068,457.49 = 7,072,250.68/x - Step 3: Cross multiply
20,718,005.19x = 31,068,457.49 × 7,072,250.68 - Step 4: Simplify right side
20,718,005.19x = 219,723,919,666,719.81 - Step 5: Solve for x
x = 219,723,919,666,719.81/20,718,005.19 - Step 6: Final answer
x = 10,605,457.32
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.