Finding the Fourth Proportional to 85,580,991.64, 128,257,931.13 and 46,619,491.87
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Solution
The fourth proportional to 85,580,991.64, 128,257,931.13 and 46,619,491.87 is: 69,867,378.99
Step by Step Solution
- Step 1: Write the proportion equation
85,580,991.64 : 128,257,931.13 = 46,619,491.87 : x - Step 2: Convert to fraction form
85,580,991.64/128,257,931.13 = 46,619,491.87/x - Step 3: Cross multiply
85,580,991.64x = 128,257,931.13 × 46,619,491.87 - Step 4: Simplify right side
85,580,991.64x = 5,979,319,577,578,054 - Step 5: Solve for x
x = 5,979,319,577,578,054/85,580,991.64 - Step 6: Final answer
x = 69,867,378.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.