Finding the Fourth Proportional to 81,248,709.12, 112,123,206.18 and 46,442,146.92
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Solution
The fourth proportional to 81,248,709.12, 112,123,206.18 and 46,442,146.92 is: 64,090,155.66
Step by Step Solution
- Step 1: Write the proportion equation
81,248,709.12 : 112,123,206.18 = 46,442,146.92 : x - Step 2: Convert to fraction form
81,248,709.12/112,123,206.18 = 46,442,146.92/x - Step 3: Cross multiply
81,248,709.12x = 112,123,206.18 × 46,442,146.92 - Step 4: Simplify right side
81,248,709.12x = 5,207,242,414,553,012 - Step 5: Solve for x
x = 5,207,242,414,553,012/81,248,709.12 - Step 6: Final answer
x = 64,090,155.66
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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.