Finding the Fourth Proportional to 103,919,812.28, 143,403,506.06 and 56,876,789.94
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Solution
The fourth proportional to 103,919,812.28, 143,403,506.06 and 56,876,789.94 is: 78,486,776.60
Step by Step Solution
- Step 1: Write the proportion equation
103,919,812.28 : 143,403,506.06 = 56,876,789.94 : x - Step 2: Convert to fraction form
103,919,812.28/143,403,506.06 = 56,876,789.94/x - Step 3: Cross multiply
103,919,812.28x = 143,403,506.06 × 56,876,789.94 - Step 4: Simplify right side
103,919,812.28x = 8,156,331,090,549,753 - Step 5: Solve for x
x = 8,156,331,090,549,753/103,919,812.28 - Step 6: Final answer
x = 78,486,776.60
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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.