Finding the Fourth Proportional to 99,689,972.80, 149,555,176.80 and 56,579,828.80
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Solution
The fourth proportional to 99,689,972.80, 149,555,176.80 and 56,579,828.80 is: 84,881,217.86
Step by Step Solution
- Step 1: Write the proportion equation
99,689,972.80 : 149,555,176.80 = 56,579,828.80 : x - Step 2: Convert to fraction form
99,689,972.80/149,555,176.80 = 56,579,828.80/x - Step 3: Cross multiply
99,689,972.80x = 149,555,176.80 × 56,579,828.80 - Step 4: Simplify right side
99,689,972.80x = 8,461,806,299,497,732 - Step 5: Solve for x
x = 8,461,806,299,497,732/99,689,972.80 - Step 6: Final answer
x = 84,881,217.86
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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.