Finding the Fourth Proportional to 103,960,420.80, 143,467,071.84 and 56,916,703.68
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Solution
The fourth proportional to 103,960,420.80, 143,467,071.84 and 56,916,703.68 is: 78,545,976.95
Step by Step Solution
- Step 1: Write the proportion equation
103,960,420.80 : 143,467,071.84 = 56,916,703.68 : x - Step 2: Convert to fraction form
103,960,420.80/143,467,071.84 = 56,916,703.68/x - Step 3: Cross multiply
103,960,420.80x = 143,467,071.84 × 56,916,703.68 - Step 4: Simplify right side
103,960,420.80x = 8,165,672,815,754,553 - Step 5: Solve for x
x = 8,165,672,815,754,553/103,960,420.80 - Step 6: Final answer
x = 78,545,976.95
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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.