Finding the Fourth Proportional to 66,254,879.28, 91,430,867.34 and 38,381,389.32
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Solution
The fourth proportional to 66,254,879.28, 91,430,867.34 and 38,381,389.32 is: 52,965,815.55
Step by Step Solution
- Step 1: Write the proportion equation
66,254,879.28 : 91,430,867.34 = 38,381,389.32 : x - Step 2: Convert to fraction form
66,254,879.28/91,430,867.34 = 38,381,389.32/x - Step 3: Cross multiply
66,254,879.28x = 91,430,867.34 × 38,381,389.32 - Step 4: Simplify right side
66,254,879.28x = 3,509,243,715,241,813 - Step 5: Solve for x
x = 3,509,243,715,241,813/66,254,879.28 - Step 6: Final answer
x = 52,965,815.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.