Finding the Fourth Proportional to 99,636,971.22, 137,481,990.12 and 57,811,447.98
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Solution
The fourth proportional to 99,636,971.22, 137,481,990.12 and 57,811,447.98 is: 79,769,916.96
Step by Step Solution
- Step 1: Write the proportion equation
99,636,971.22 : 137,481,990.12 = 57,811,447.98 : x - Step 2: Convert to fraction form
99,636,971.22/137,481,990.12 = 57,811,447.98/x - Step 3: Cross multiply
99,636,971.22x = 137,481,990.12 × 57,811,447.98 - Step 4: Simplify right side
99,636,971.22x = 7,948,032,920,009,254 - Step 5: Solve for x
x = 7,948,032,920,009,254/99,636,971.22 - Step 6: Final answer
x = 79,769,916.96
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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.