Finding the Fourth Proportional to 90,438,867.18, 135,718,772.94 and 38,635,576.14
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Solution
The fourth proportional to 90,438,867.18, 135,718,772.94 and 38,635,576.14 is: 57,979,197.98
Step by Step Solution
- Step 1: Write the proportion equation
90,438,867.18 : 135,718,772.94 = 38,635,576.14 : x - Step 2: Convert to fraction form
90,438,867.18/135,718,772.94 = 38,635,576.14/x - Step 3: Cross multiply
90,438,867.18x = 135,718,772.94 × 38,635,576.14 - Step 4: Simplify right side
90,438,867.18x = 5,243,572,985,550,742 - Step 5: Solve for x
x = 5,243,572,985,550,742/90,438,867.18 - Step 6: Final answer
x = 57,979,197.98
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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.