Finding the Fourth Proportional to 81,130,248.09, 121,694,309.16 and 19,719,228.42
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Solution
The fourth proportional to 81,130,248.09, 121,694,309.16 and 19,719,228.42 is: 29,578,584.27
Step by Step Solution
- Step 1: Write the proportion equation
81,130,248.09 : 121,694,309.16 = 19,719,228.42 : x - Step 2: Convert to fraction form
81,130,248.09/121,694,309.16 = 19,719,228.42/x - Step 3: Cross multiply
81,130,248.09x = 121,694,309.16 × 19,719,228.42 - Step 4: Simplify right side
81,130,248.09x = 2,399,717,879,740,138.50 - Step 5: Solve for x
x = 2,399,717,879,740,138.50/81,130,248.09 - Step 6: Final answer
x = 29,578,584.27
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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.