Finding the Fourth Proportional to 81,069,321.18, 121,552,893.45 and 68,777,579.28
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Solution
The fourth proportional to 81,069,321.18, 121,552,893.45 and 68,777,579.28 is: 103,123,026.62
Step by Step Solution
- Step 1: Write the proportion equation
81,069,321.18 : 121,552,893.45 = 68,777,579.28 : x - Step 2: Convert to fraction form
81,069,321.18/121,552,893.45 = 68,777,579.28/x - Step 3: Cross multiply
81,069,321.18x = 121,552,893.45 × 68,777,579.28 - Step 4: Simplify right side
81,069,321.18x = 8,360,113,765,970,768 - Step 5: Solve for x
x = 8,360,113,765,970,768/81,069,321.18 - Step 6: Final answer
x = 103,123,026.62
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.