Finding the Fourth Proportional to 100,874,652.45, 139,202,719.32 and 56,218,248.31
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Solution
The fourth proportional to 100,874,652.45, 139,202,719.32 and 56,218,248.31 is: 77,578,785.65
Step by Step Solution
- Step 1: Write the proportion equation
100,874,652.45 : 139,202,719.32 = 56,218,248.31 : x - Step 2: Convert to fraction form
100,874,652.45/139,202,719.32 = 56,218,248.31/x - Step 3: Cross multiply
100,874,652.45x = 139,202,719.32 × 56,218,248.31 - Step 4: Simplify right side
100,874,652.45x = 7,825,733,040,359,772 - Step 5: Solve for x
x = 7,825,733,040,359,772/100,874,652.45 - Step 6: Final answer
x = 77,578,785.65
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.