Finding the Fourth Proportional to 76,458,474.80, 105,512,648.76 and 42,119,658.80
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Solution
The fourth proportional to 76,458,474.80, 105,512,648.76 and 42,119,658.80 is: 58,125,103.55
Step by Step Solution
- Step 1: Write the proportion equation
76,458,474.80 : 105,512,648.76 = 42,119,658.80 : x - Step 2: Convert to fraction form
76,458,474.80/105,512,648.76 = 42,119,658.80/x - Step 3: Cross multiply
76,458,474.80x = 105,512,648.76 × 42,119,658.80 - Step 4: Simplify right side
76,458,474.80x = 4,444,156,764,855,443 - Step 5: Solve for x
x = 4,444,156,764,855,443/76,458,474.80 - Step 6: Final answer
x = 58,125,103.55
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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.