Finding the Fourth Proportional to 71,782,328.68, 99,059,108.58 and 39,187,280.68
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Solution
The fourth proportional to 71,782,328.68, 99,059,108.58 and 39,187,280.68 is: 54,078,171.65
Step by Step Solution
- Step 1: Write the proportion equation
71,782,328.68 : 99,059,108.58 = 39,187,280.68 : x - Step 2: Convert to fraction form
71,782,328.68/99,059,108.58 = 39,187,280.68/x - Step 3: Cross multiply
71,782,328.68x = 99,059,108.58 × 39,187,280.68 - Step 4: Simplify right side
71,782,328.68x = 3,881,857,091,835,056 - Step 5: Solve for x
x = 3,881,857,091,835,056/71,782,328.68 - Step 6: Final answer
x = 54,078,171.65
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.