Finding the Fourth Proportional to 71,819,313.36, 99,111,281.88 and 40,881,471.92
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Solution
The fourth proportional to 71,819,313.36, 99,111,281.88 and 40,881,471.92 is: 56,416,789.55
Step by Step Solution
- Step 1: Write the proportion equation
71,819,313.36 : 99,111,281.88 = 40,881,471.92 : x - Step 2: Convert to fraction form
71,819,313.36/99,111,281.88 = 40,881,471.92/x - Step 3: Cross multiply
71,819,313.36x = 99,111,281.88 × 40,881,471.92 - Step 4: Simplify right side
71,819,313.36x = 4,051,815,087,132,425 - Step 5: Solve for x
x = 4,051,815,087,132,425/71,819,313.36 - Step 6: Final answer
x = 56,416,789.55
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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.