Finding the Fourth Proportional to 81,686,350.68, 122,565,709.67 and 42,815,564.86
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Solution
The fourth proportional to 81,686,350.68, 122,565,709.67 and 42,815,564.86 is: 64,242,312.80
Step by Step Solution
- Step 1: Write the proportion equation
81,686,350.68 : 122,565,709.67 = 42,815,564.86 : x - Step 2: Convert to fraction form
81,686,350.68/122,565,709.67 = 42,815,564.86/x - Step 3: Cross multiply
81,686,350.68x = 122,565,709.67 × 42,815,564.86 - Step 4: Simplify right side
81,686,350.68x = 5,247,720,091,825,921 - Step 5: Solve for x
x = 5,247,720,091,825,921/81,686,350.68 - Step 6: Final answer
x = 64,242,312.80
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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.