Finding the Fourth Proportional to 90,648,862.20, 135,683,953.20 and 71,516,986.20
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Solution
The fourth proportional to 90,648,862.20, 135,683,953.20 and 71,516,986.20 is: 107,047,205.81
Step by Step Solution
- Step 1: Write the proportion equation
90,648,862.20 : 135,683,953.20 = 71,516,986.20 : x - Step 2: Convert to fraction form
90,648,862.20/135,683,953.20 = 71,516,986.20/x - Step 3: Cross multiply
90,648,862.20x = 135,683,953.20 × 71,516,986.20 - Step 4: Simplify right side
90,648,862.20x = 9,703,707,408,565,846 - Step 5: Solve for x
x = 9,703,707,408,565,846/90,648,862.20 - Step 6: Final answer
x = 107,047,205.81
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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.