Finding the Fourth Proportional to 75,564,006.95, 113,346,641.28 and 20,980,848.99
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Solution
The fourth proportional to 75,564,006.95, 113,346,641.28 and 20,980,848.99 is: 31,471,448.64
Step by Step Solution
- Step 1: Write the proportion equation
75,564,006.95 : 113,346,641.28 = 20,980,848.99 : x - Step 2: Convert to fraction form
75,564,006.95/113,346,641.28 = 20,980,848.99/x - Step 3: Cross multiply
75,564,006.95x = 113,346,641.28 × 20,980,848.99 - Step 4: Simplify right side
75,564,006.95x = 2,378,108,764,067,934 - Step 5: Solve for x
x = 2,378,108,764,067,934/75,564,006.95 - Step 6: Final answer
x = 31,471,448.64
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.