Finding the Fourth Proportional to 78,154,417.20, 107,782,519.92 and 48,788,474.70
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Solution
The fourth proportional to 78,154,417.20, 107,782,519.92 and 48,788,474.70 is: 67,284,037.61
Step by Step Solution
- Step 1: Write the proportion equation
78,154,417.20 : 107,782,519.92 = 48,788,474.70 : x - Step 2: Convert to fraction form
78,154,417.20/107,782,519.92 = 48,788,474.70/x - Step 3: Cross multiply
78,154,417.20x = 107,782,519.92 × 48,788,474.70 - Step 4: Simplify right side
78,154,417.20x = 5,258,544,746,219,166 - Step 5: Solve for x
x = 5,258,544,746,219,166/78,154,417.20 - Step 6: Final answer
x = 67,284,037.61
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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.