Finding the Fourth Proportional to 85,580,990.64, 128,257,929.63 and 46,619,490.87
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Solution
The fourth proportional to 85,580,990.64, 128,257,929.63 and 46,619,490.87 is: 69,867,377.49
Step by Step Solution
- Step 1: Write the proportion equation
85,580,990.64 : 128,257,929.63 = 46,619,490.87 : x - Step 2: Convert to fraction form
85,580,990.64/128,257,929.63 = 46,619,490.87/x - Step 3: Cross multiply
85,580,990.64x = 128,257,929.63 × 46,619,490.87 - Step 4: Simplify right side
85,580,990.64x = 5,979,319,379,390,887 - Step 5: Solve for x
x = 5,979,319,379,390,887/85,580,990.64 - Step 6: Final answer
x = 69,867,377.49
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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.