Finding the Fourth Proportional to 71,317,342.70, 106,976,014.05 and 66,498,944.30
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Solution
The fourth proportional to 71,317,342.70, 106,976,014.05 and 66,498,944.30 is: 99,748,416.45
Step by Step Solution
- Step 1: Write the proportion equation
71,317,342.70 : 106,976,014.05 = 66,498,944.30 : x - Step 2: Convert to fraction form
71,317,342.70/106,976,014.05 = 66,498,944.30/x - Step 3: Cross multiply
71,317,342.70x = 106,976,014.05 × 66,498,944.30 - Step 4: Simplify right side
71,317,342.70x = 7,113,791,999,746,967 - Step 5: Solve for x
x = 7,113,791,999,746,967/71,317,342.70 - Step 6: Final answer
x = 99,748,416.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.